Finding the Fourth Proportional to 1,156.90, 1,596.31 and 659.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156.90 : 1,596.31 = 659.47 : x
2. Step 2: Convert to fraction form
   1,156.90/1,596.31 = 659.47/x
3. Step 3: Cross multiply
   1,156.90x = 1,596.31 × 659.47
4. Step 4: Simplify right side
   1,156.90x = 1,052,718.56
5. Step 5: Solve for x
   x = 1,052,718.56/1,156.90
6. Step 6: Final answer
   x = 909.95