Finding the Fourth Proportional to 1,124.69, 1,552.05 and 627.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124.69 : 1,552.05 = 627.31 : x
2. Step 2: Convert to fraction form
   1,124.69/1,552.05 = 627.31/x
3. Step 3: Cross multiply
   1,124.69x = 1,552.05 × 627.31
4. Step 4: Simplify right side
   1,124.69x = 973,616.49
5. Step 5: Solve for x
   x = 973,616.49/1,124.69
6. Step 6: Final answer
   x = 865.68