Finding the Fourth Proportional to 2,778.57, 3,831.26 and 2,272.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,778.57 : 3,831.26 = 2,272.82 : x
2. Step 2: Convert to fraction form
   2,778.57/3,831.26 = 2,272.82/x
3. Step 3: Cross multiply
   2,778.57x = 3,831.26 × 2,272.82
4. Step 4: Simplify right side
   2,778.57x = 8,707,733.83
5. Step 5: Solve for x
   x = 8,707,733.83/2,778.57
6. Step 6: Final answer
   x = 3,133.89