The answer for LIFO is not 4536 or 4836

Bonita Company's record of transactions concerning part X for the month of April was as follows. Compute the inventory at April 30 on each of the following bases. Assume that perpetual inventory records are kept in units only (1) First-in, first-out (FIFO). (2) Last-in, first-out (LIFO). (3) Average-cost. (Round final answers to 0 decimal places, eg. 6,548.)