Everything is correct other then weighted average in question 3 and 4. On question 3 with rounding i got 55502.4 for the weighted average. Please help

its Montoure Company uses a periodic inventory system. It entered into the following calendar-year purchases and sales transactions. Date Activities Units Acquired at Cost Units Sold at Retail Jan. 1 Beginning inventory 800 units@ $90.00 per unit Feb. 10 Purchase 500 units @ $87.00 per unit Mar. 13 Purchase 300 units @ $72.00 per unit Mar. 15 Sales 900 units @ $120.00 per unit Aug. 21 Purchase 300 units@ $95.00 per unit Sept. 5 Purchase 780 units @ $91.00 per unit Sept. 10 Sales 1,880 units @ $120.00 per unit Totals 2,600 units 1,980 units eBook Print Required: 1. Compute cost of goods available for sale and the number of units available for sale. References Cost of goods available for sale Number of units available for sale $229,300 2,600 units 2. Compute the number of units in ending inventory Ending inventory 620 units 3. Compute the cost assigned to ending inventory using (a) FIFO. (b) LIFO. (c) weighted average, and (d) specific identification. For specific identification units sold consist of 800 units from beginning inventory, 200 from the February 10 purchase, 300 from the March 13 purchase, 150 from the August 21 purchase, and 530 from the September 5 purchase. (Round your average cost per unit to 2 decimal places. Round your final answers to the nearest whole dollar amount.) Ending Inventory (a) FIFO (b) LIFO (c) Weighted average (d) Specific identification $ $ $ $ 56,420 55,800 55,510 55,820 aces 4. Compute gross profit earned by the company for each of the four costing methods. (Round your average cost per unit to 2 decimal places. Round your final answers to the nearest whole dollar amount.) $ Sales Loss: Cost of goods sold Gross profit Weighted LIFO Specific FIFO Average Identification 237,600 $ 237,600 $ 237,600 $ 237,600 172,880 173.500 237,600 173,480 64,720 $ 64,100 $ 0 $ 64,120 $