Finding the Fourth Proportional to 1,066.86, 1,472.36 and 624.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.86 : 1,472.36 = 624.67 : x
2. Step 2: Convert to fraction form
   1,066.86/1,472.36 = 624.67/x
3. Step 3: Cross multiply
   1,066.86x = 1,472.36 × 624.67
4. Step 4: Simplify right side
   1,066.86x = 919,732.32
5. Step 5: Solve for x
   x = 919,732.32/1,066.86
6. Step 6: Final answer
   x = 862.09