Finding the Fourth Proportional to 2,064.54, 3,096.93 and 831.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.54 : 3,096.93 = 831.77 : x
2. Step 2: Convert to fraction form
   2,064.54/3,096.93 = 831.77/x
3. Step 3: Cross multiply
   2,064.54x = 3,096.93 × 831.77
4. Step 4: Simplify right side
   2,064.54x = 2,575,932.71
5. Step 5: Solve for x
   x = 2,575,932.71/2,064.54
6. Step 6: Final answer
   x = 1,247.70