E7-6 (Algo) Calculating Ending Inventory and Cost of Goods Sold Under FIFO, LIFO, and Average Cost LO7-2 Hamilton Company uses a periodic inventory system. At the end of the annual accounting period, December 31 of the current year, the accounting records provided the following information for product 1: Unit Units Cost Inventory, December 31, prior 1,980 $8 year For the current year: Purchase, March 21 Purchase, August 1 Inventory, December 31, current 6,090 4,150 7 2,840 year Required: Compute ending inventory and cost of goods sold under FIIFO, LIFO, and average cost inventory costing methods. (Round "Average cost per unit" to 4 decimal places and final answers to nearest whole dollar amount.) Average Cost FIFO LIFO Ending inventory Cost of goods sold