Finding the Fourth Proportional to 2,064.56, 3,096.79 and 831.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.56 : 3,096.79 = 831.93 : x
2. Step 2: Convert to fraction form
   2,064.56/3,096.79 = 831.93/x
3. Step 3: Cross multiply
   2,064.56x = 3,096.79 × 831.93
4. Step 4: Simplify right side
   2,064.56x = 2,576,320.91
5. Step 5: Solve for x
   x = 2,576,320.91/2,064.56
6. Step 6: Final answer
   x = 1,247.88