Finding the Fourth Proportional to 1,153.27, 1,591.51 and 655.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,153.27 : 1,591.51 = 655.91 : x
2. Step 2: Convert to fraction form
   1,153.27/1,591.51 = 655.91/x
3. Step 3: Cross multiply
   1,153.27x = 1,591.51 × 655.91
4. Step 4: Simplify right side
   1,153.27x = 1,043,890.48
5. Step 5: Solve for x
   x = 1,043,890.48/1,153.27
6. Step 6: Final answer
   x = 905.15