Finding the Fourth Proportional to 2,551.18, 3,825.57 and 907.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,551.18 : 3,825.57 = 907.70 : x
2. Step 2: Convert to fraction form
   2,551.18/3,825.57 = 907.70/x
3. Step 3: Cross multiply
   2,551.18x = 3,825.57 × 907.70
4. Step 4: Simplify right side
   2,551.18x = 3,472,469.89
5. Step 5: Solve for x
   x = 3,472,469.89/2,551.18
6. Step 6: Final answer
   x = 1,361.12