Finding the Fourth Proportional to 2,064.53, 3,096.39 and 831.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.53 : 3,096.39 = 831.31 : x
2. Step 2: Convert to fraction form
   2,064.53/3,096.39 = 831.31/x
3. Step 3: Cross multiply
   2,064.53x = 3,096.39 × 831.31
4. Step 4: Simplify right side
   2,064.53x = 2,574,059.97
5. Step 5: Solve for x
   x = 2,574,059.97/2,064.53
6. Step 6: Final answer
   x = 1,246.80