Dianna Co. prepares monthly income statements for internal reporting. Because inventory is counted only at year end, month-end inventories must be estimated. The following information relates to the month of September: Accounts receivable, September 1 Inventory, September 1 Collections of accounts during September Purchases during September Accounts receivable, September 30 $121,000 147,000 184,000 165,000 127,000 The company uses the gross profit method to estimate ending inventory on September 30. The company uses a 20% mark-up based upon cost. All September sales are made on account. Required: (Show all supporting calculations for part marks.) Based upon the data above, use the Gross Profit Method to estimate the amount of inventory on hand on September 30