Finding the Fourth Proportional to 1,066.82, 1,472.31 and 624.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.82 : 1,472.31 = 624.69 : x
2. Step 2: Convert to fraction form
   1,066.82/1,472.31 = 624.69/x
3. Step 3: Cross multiply
   1,066.82x = 1,472.31 × 624.69
4. Step 4: Simplify right side
   1,066.82x = 919,737.33
5. Step 5: Solve for x
   x = 919,737.33/1,066.82
6. Step 6: Final answer
   x = 862.13