Current Attempt in Progress Sheffield Corp. Inc. had a beginning inventory of 105 units of Product RST at a cost of $10 per unit. During the year, purchases were: at 395 units at $13 Feb. 20 May 5 570 units 510 units $11 $12 Aug. 12 Dec. 8 at 100 units at $14 Sheffield Corp. uses a periodic inventory system. Sales totaled 1,550 units. (62) Determine the ending inventory and the cost of goods sold under each of the assumed cost flow methods (FIFO, LIFO, and average-cost). Prove the accuracy of the cost of goods sold under the FIFO and LIFO methods. (Round per unit cost to 3 decimal places, e.g. 15.647 and final answers to decimal places, e.g. 5,125.) FIFO LIFO AVERAGE-COST The ending inventory $ $ $ The cost of goods sold $ $ $ e Textbook and Media