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: Inventory, December 31, prior year For the current year: Purchase, March 21 Purchase, August 1 Inventory, December 31, current year Required: Unit Units Cost 1,980 $6 6,030 4,190 53 2,930 Compute ending inventory and cost of goods sold under FIFO, LIFO, and average cost inventory costing methods. (Round "Average cost per unit" to 4 decimal places and final answers to nearest whole dollar amount.) FIFO LIFO Average Cost Ending inventory Cost of goods sold $ 8,790