Finding the Fourth Proportional to 1,126.86, 1,555.04 and 629.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,126.86 : 1,555.04 = 629.52 : x
2. Step 2: Convert to fraction form
   1,126.86/1,555.04 = 629.52/x
3. Step 3: Cross multiply
   1,126.86x = 1,555.04 × 629.52
4. Step 4: Simplify right side
   1,126.86x = 978,928.78
5. Step 5: Solve for x
   x = 978,928.78/1,126.86
6. Step 6: Final answer
   x = 868.72