Bigelow Contractors signed a contract to construct a storage facility for RGN manufacturing, Inc. The fixed-fee contract specifies that the facility is to be completed in three years. Bigelow uses the percentage-of-completion method (cost-to-cost approach) to account for its construction transactions. Information related to this contract is summarized in the following table.

Contract price	$ 2,000,000
	2018	2019	2020
Actual construction costs incurred during the year	$ 900,000	$ 300,000	$ 600,000
Construction costs incurred in prior years	0	900,000	1,200,000
Cumulative construction costs incurred to date	900,000	1,200,000	1,800,000
Estimated costs to complete	600,000	400,000	0
Estimated total costs	1,500,000	1,600,000	1,800,000
Progress billings made during the year	700,000	700,000	600,000
Cash collections during the year	400,000	800,000	800,000

Assume that Bigelow's total assets were $5,000,000 and its liabilities were $2,000,000 at the beginning of the year.

b. Compute the total assets, liabilities, and equity under the percentage-of-completion and completed contract methods at the end of each year.

Can someone help with Part B, the question is already answered, but does not explain how to get the total assets.

thanks in advance.