Finding the Fourth Proportional to 2,064.17, 3,096.22 and 831.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.17 : 3,096.22 = 831.55 : x
2. Step 2: Convert to fraction form
   2,064.17/3,096.22 = 831.55/x
3. Step 3: Cross multiply
   2,064.17x = 3,096.22 × 831.55
4. Step 4: Simplify right side
   2,064.17x = 2,574,651.92
5. Step 5: Solve for x
   x = 2,574,651.92/2,064.17
6. Step 6: Final answer
   x = 1,247.31