$ 2,304 34 2484121020 otals mpute gross profit using the FIFO inventory costing method. ross profit is $ 26 1,080 using the FIFO inventory costing method. $ 2,304 34 2484121020 otals mpute gross profit using the FIFO inventory costing method. ross profit is $ 26 1,080 using the FIFO inventory costing method