Finding the Fourth Proportional to 1,156.61, 1,596.17 and 659.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156.61 : 1,596.17 = 659.25 : x
2. Step 2: Convert to fraction form
   1,156.61/1,596.17 = 659.25/x
3. Step 3: Cross multiply
   1,156.61x = 1,596.17 × 659.25
4. Step 4: Simplify right side
   1,156.61x = 1,052,271.78
5. Step 5: Solve for x
   x = 1,052,271.78/1,156.61
6. Step 6: Final answer
   x = 909.79