You have the following information for Swifty Inc. for the month ended June $30,2022.$ Swifty uses a periodic inventory system.

Calculate ending inventory, cost of goods sold, gross profit under each of the following methods. $(1)$ LIFO. $(2)$ FIFO. $(3)$ Average$-$

cost$.($Round average$-$cost method answers to $2$ decimal places, e$.$g$.1,250\mathrm{.}25$ and other answers to $0$ decimal places, e$.$g$.1,250.)$