Finding the Fourth Proportional to 2,555.97, 3,831.22 and 1,322.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.97 : 3,831.22 = 1,322.14 : x
2. Step 2: Convert to fraction form
   2,555.97/3,831.22 = 1,322.14/x
3. Step 3: Cross multiply
   2,555.97x = 3,831.22 × 1,322.14
4. Step 4: Simplify right side
   2,555.97x = 5,065,401.29
5. Step 5: Solve for x
   x = 5,065,401.29/2,555.97
6. Step 6: Final answer
   x = 1,981.79