Finding the Fourth Proportional to 1,066.38, 1,471.50 and 624.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.38 : 1,471.50 = 624.24 : x
2. Step 2: Convert to fraction form
   1,066.38/1,471.50 = 624.24/x
3. Step 3: Cross multiply
   1,066.38x = 1,471.50 × 624.24
4. Step 4: Simplify right side
   1,066.38x = 918,569.16
5. Step 5: Solve for x
   x = 918,569.16/1,066.38
6. Step 6: Final answer
   x = 861.39