Finding the Fourth Proportional to 1,153.50, 1,591.83 and 629.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,153.50 : 1,591.83 = 629.53 : x
2. Step 2: Convert to fraction form
   1,153.50/1,591.83 = 629.53/x
3. Step 3: Cross multiply
   1,153.50x = 1,591.83 × 629.53
4. Step 4: Simplify right side
   1,153.50x = 1,002,104.74
5. Step 5: Solve for x
   x = 1,002,104.74/1,153.50
6. Step 6: Final answer
   x = 868.75