Finding the Fourth Proportional to 1,126.52, 1,554.55 and 629.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,126.52 : 1,554.55 = 629.15 : x
2. Step 2: Convert to fraction form
   1,126.52/1,554.55 = 629.15/x
3. Step 3: Cross multiply
   1,126.52x = 1,554.55 × 629.15
4. Step 4: Simplify right side
   1,126.52x = 978,035.79
5. Step 5: Solve for x
   x = 978,035.79/1,126.52
6. Step 6: Final answer
   x = 868.20