Finding the Fourth Proportional to 1,317.43, 1,976.71 and 624.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317.43 : 1,976.71 = 624.59 : x
2. Step 2: Convert to fraction form
   1,317.43/1,976.71 = 624.59/x
3. Step 3: Cross multiply
   1,317.43x = 1,976.71 × 624.59
4. Step 4: Simplify right side
   1,317.43x = 1,234,623.42
5. Step 5: Solve for x
   x = 1,234,623.42/1,317.43
6. Step 6: Final answer
   x = 937.15