Calculate ending inventory, cost of goods sold, gross profit under each of the following methods. (1) LIFO. (2) FIFO. (3) Averagecost. (Round average-cost method answers to 2 decimal ploces, e.g. 1,250.25 and other answers to 0 decimal places, eg. 1,250. ) Calculate ending inventory, cost of goods sold, gross profit under each of the following methods. (1) LIFO. (2) FIFO. (3) Averagecost. (Round average-cost method answers to 2 decimal ploces, e.g. 1,250.25 and other answers to 0 decimal places, eg. 1,250. )