Finding the Fourth Proportional to 1,066.32, 1,471.52 and 624.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.32 : 1,471.52 = 624.60 : x
2. Step 2: Convert to fraction form
   1,066.32/1,471.52 = 624.60/x
3. Step 3: Cross multiply
   1,066.32x = 1,471.52 × 624.60
4. Step 4: Simplify right side
   1,066.32x = 919,108.27
5. Step 5: Solve for x
   x = 919,108.27/1,066.32
6. Step 6: Final answer
   x = 861.94