Finding the Fourth Proportional to 1,153.03, 1,591.13 and 629.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,153.03 : 1,591.13 = 629.05 : x
2. Step 2: Convert to fraction form
   1,153.03/1,591.13 = 629.05/x
3. Step 3: Cross multiply
   1,153.03x = 1,591.13 × 629.05
4. Step 4: Simplify right side
   1,153.03x = 1,000,892.37
5. Step 5: Solve for x
   x = 1,000,892.37/1,153.03
6. Step 6: Final answer
   x = 868.06