Finding the Fourth Proportional to 1,044.29, 1,440.83 and 624.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,044.29 : 1,440.83 = 624.47 : x
2. Step 2: Convert to fraction form
   1,044.29/1,440.83 = 624.47/x
3. Step 3: Cross multiply
   1,044.29x = 1,440.83 × 624.47
4. Step 4: Simplify right side
   1,044.29x = 899,744.78
5. Step 5: Solve for x
   x = 899,744.78/1,044.29
6. Step 6: Final answer
   x = 861.59