Finding the Fourth Proportional to 2,862.16, 4,274.18 and 2,831.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,862.16 : 4,274.18 = 2,831.23 : x
2. Step 2: Convert to fraction form
   2,862.16/4,274.18 = 2,831.23/x
3. Step 3: Cross multiply
   2,862.16x = 4,274.18 × 2,831.23
4. Step 4: Simplify right side
   2,862.16x = 12,101,186.64
5. Step 5: Solve for x
   x = 12,101,186.64/2,862.16
6. Step 6: Final answer
   x = 4,227.99