Finding the Fourth Proportional to 1,153.41, 1,591.71 and 629.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,153.41 : 1,591.71 = 629.43 : x
2. Step 2: Convert to fraction form
   1,153.41/1,591.71 = 629.43/x
3. Step 3: Cross multiply
   1,153.41x = 1,591.71 × 629.43
4. Step 4: Simplify right side
   1,153.41x = 1,001,870.03
5. Step 5: Solve for x
   x = 1,001,870.03/1,153.41
6. Step 6: Final answer
   x = 868.62