Pronghorn Company Inc had a beginning inventory of 108 units of Product RST at a cost of $5 per unit. During the year, purchases were: Feb. 20 May 5 648 units at $6 540 units at $7 Aug. 12 432 units at $8 Dec. 8 216 units at $9 Pronghorn Company uses a periodic inventory system. Sales totaled 1,620 units. Determine the ending inventory and the cost of goods sold under each of the assumed cost flow methods (FIFO, LIFO, and average-cost). (For calculation purposes, round average cost to 2 decimal places, eg. 5.25. Round answers to 0 decimal places, e.g. 125.) FIFO LIFO AVERAGE-COST The ending inventory $ The cost of goods sold $