Finding the Fourth Proportional to 2,605.95, 3,909.53 and 757.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.95 : 3,909.53 = 757.10 : x
2. Step 2: Convert to fraction form
   2,605.95/3,909.53 = 757.10/x
3. Step 3: Cross multiply
   2,605.95x = 3,909.53 × 757.10
4. Step 4: Simplify right side
   2,605.95x = 2,959,916.83
5. Step 5: Solve for x
   x = 2,959,916.83/2,605.95
6. Step 6: Final answer
   x = 1,135.83