Finding the Fourth Proportional to 2,064.42, 3,096.54 and 831.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.42 : 3,096.54 = 831.42 : x
2. Step 2: Convert to fraction form
   2,064.42/3,096.54 = 831.42/x
3. Step 3: Cross multiply
   2,064.42x = 3,096.54 × 831.42
4. Step 4: Simplify right side
   2,064.42x = 2,574,525.29
5. Step 5: Solve for x
   x = 2,574,525.29/2,064.42
6. Step 6: Final answer
   x = 1,247.09