Finding the Fourth Proportional to 2,606.32, 3,909.55 and 757.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.32 : 3,909.55 = 757.45 : x
2. Step 2: Convert to fraction form
   2,606.32/3,909.55 = 757.45/x
3. Step 3: Cross multiply
   2,606.32x = 3,909.55 × 757.45
4. Step 4: Simplify right side
   2,606.32x = 2,961,294.63
5. Step 5: Solve for x
   x = 2,961,294.63/2,606.32
6. Step 6: Final answer
   x = 1,136.20