The adjusted trial balance for PI Detectives reported the following account balances:

Accounts Receivable $540;

Supplies $9,400;

Prepaid Insurance $7,600;

Equipment $30,000;

Accumulated DepreciationEquipment $4,400;

Accounts Payable $240;

Unearned Revenue $5,400;

Notes Payable $3,400;

Common Stock $24,000;

Retained Earnings $6,100;

Dividends $3,400;

Service Revenue $35,800;

Salaries and Wages Expense $22,000;

Depreciation Expense $1,200.

Prepare an adjusted trial balance as of December 31, and solve for its missing Cash balance.