Finding the Fourth Proportional to 2,605.25, 3,908.45 and 756.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.25 : 3,908.45 = 756.43 : x
2. Step 2: Convert to fraction form
   2,605.25/3,908.45 = 756.43/x
3. Step 3: Cross multiply
   2,605.25x = 3,908.45 × 756.43
4. Step 4: Simplify right side
   2,605.25x = 2,956,460.95
5. Step 5: Solve for x
   x = 2,956,460.95/2,605.25
6. Step 6: Final answer
   x = 1,134.81