Finding the Fourth Proportional to 2,551.56, 3,826.38 and 907.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,551.56 : 3,826.38 = 907.68 : x
2. Step 2: Convert to fraction form
   2,551.56/3,826.38 = 907.68/x
3. Step 3: Cross multiply
   2,551.56x = 3,826.38 × 907.68
4. Step 4: Simplify right side
   2,551.56x = 3,473,128.60
5. Step 5: Solve for x
   x = 3,473,128.60/2,551.56
6. Step 6: Final answer
   x = 1,361.18