Observations are taken on sales of a certain mountain bike in 30 sporting goods stores. The regression model was Y = total sales (thousands of dollars), X₁ = display floor space (square meters), X₂ = competitors’ advertising expenditures (thousands of dollars), X₃ = advertised price (dollars per unit).

Make a prediction for Sales when FloorSpace = 68, Competing Ads = 92, and Price = 1,396. (Enter your answer in thousands. Round your answer to 2 decimal places.)