Finding the Fourth Proportional to 1,153.52, 1,591.86 and 629.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,153.52 : 1,591.86 = 629.54 : x
2. Step 2: Convert to fraction form
   1,153.52/1,591.86 = 629.54/x
3. Step 3: Cross multiply
   1,153.52x = 1,591.86 × 629.54
4. Step 4: Simplify right side
   1,153.52x = 1,002,139.54
5. Step 5: Solve for x
   x = 1,002,139.54/1,153.52
6. Step 6: Final answer
   x = 868.77