Finding the Fourth Proportional to 2,831.97, 3,906.72 and 1,712.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,831.97 : 3,906.72 = 1,712.16 : x
2. Step 2: Convert to fraction form
   2,831.97/3,906.72 = 1,712.16/x
3. Step 3: Cross multiply
   2,831.97x = 3,906.72 × 1,712.16
4. Step 4: Simplify right side
   2,831.97x = 6,688,929.72
5. Step 5: Solve for x
   x = 6,688,929.72/2,831.97
6. Step 6: Final answer
   x = 2,361.94