Finding the Fourth Proportional to 2,550.61, 3,826.49 and 907.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,550.61 : 3,826.49 = 907.15 : x
2. Step 2: Convert to fraction form
   2,550.61/3,826.49 = 907.15/x
3. Step 3: Cross multiply
   2,550.61x = 3,826.49 × 907.15
4. Step 4: Simplify right side
   2,550.61x = 3,471,200.40
5. Step 5: Solve for x
   x = 3,471,200.40/2,550.61
6. Step 6: Final answer
   x = 1,360.93