Inventory Costing Methods-Perpetual Method Using the data below, assume that Portet Corporation uses the perpetual inventory system. Calculate the value of ending inventory and cost of goods sold at year-end using the perpetual method and (a) first-in, first-out, (b) last-in, first-out, and (c) weighted average cost method. Round the cost per unit to 3 decimal places and round your final answers to the nearest dollar, Units Unit Cost Beginning inventory, January 1 1.200 538 Purchases: February 11 1,500 539 May 18 1.400 October 23 1.100 Sales: March July 1 1.400 October 29 1.000 40 42 1.400 0 Round the cost per unit to 3 decimal places and round your final answers to the nearest dollar a. Firstin. First Ending Inventory S 0 Cost of goods Sold 5 b. Lasti, tout Ending inventory 5 Cost of Goods Sold 5 Weighted Average Ending inventor 5 Cost of Goods Sold