Finding the Fourth Proportional to 1,066.71, 1,472.04 and 624.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.71 : 1,472.04 = 624.87 : x
2. Step 2: Convert to fraction form
   1,066.71/1,472.04 = 624.87/x
3. Step 3: Cross multiply
   1,066.71x = 1,472.04 × 624.87
4. Step 4: Simplify right side
   1,066.71x = 919,833.63
5. Step 5: Solve for x
   x = 919,833.63/1,066.71
6. Step 6: Final answer
   x = 862.31