Finding the Fourth Proportional to 2,754.39, 4,131.27 and 806.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,754.39 : 4,131.27 = 806.61 : x
2. Step 2: Convert to fraction form
   2,754.39/4,131.27 = 806.61/x
3. Step 3: Cross multiply
   2,754.39x = 4,131.27 × 806.61
4. Step 4: Simplify right side
   2,754.39x = 3,332,323.69
5. Step 5: Solve for x
   x = 3,332,323.69/2,754.39
6. Step 6: Final answer
   x = 1,209.82