Culver, Inc. began work on a $6,391,000 contract in 2017 to construct an office building. During 2017, Culver, Inc. incurred costs of $1,867,020, billed its customers for $1,209,000, and collected $908,000. At December 31, 2017, the estimated additional costs to complete the project total $3,178,980. Prepare Culvers 2017 journal entries using the percentage-of-completion method.