Periodic inventory by three methods; cost of goods sold

The units of an item available for sale during the year were as follows:

Jan. $1$ Inventory $30$ units at $$100$

Mar. $10$ Purchase $70$ units at $$110$

Aug. $30$ Purchase $30$ units at $$114$

Dec. $12$ Purchase $70$ units at $$118$

There are $80$ units of the item in the physical inventory at December $31.$ The periodic inventory system is used.

Determine the ending inventory cost and the cost of goods sold by three methods; FIFO, LIFO, and Weighted Average Cost. In your calculations round average unit cost to the nearest cent,

and round all other calculations and your final answers to the nearest dollar.