Finding the Fourth Proportional to 2,606.58, 3,909.47 and 757.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.58 : 3,909.47 = 757.31 : x
2. Step 2: Convert to fraction form
   2,606.58/3,909.47 = 757.31/x
3. Step 3: Cross multiply
   2,606.58x = 3,909.47 × 757.31
4. Step 4: Simplify right side
   2,606.58x = 2,960,684.88
5. Step 5: Solve for x
   x = 2,960,684.88/2,606.58
6. Step 6: Final answer
   x = 1,135.85