Finding the Fourth Proportional to 2,064.61, 3,096.73 and 831.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.61 : 3,096.73 = 831.23 : x
2. Step 2: Convert to fraction form
   2,064.61/3,096.73 = 831.23/x
3. Step 3: Cross multiply
   2,064.61x = 3,096.73 × 831.23
4. Step 4: Simplify right side
   2,064.61x = 2,574,094.88
5. Step 5: Solve for x
   x = 2,574,094.88/2,064.61
6. Step 6: Final answer
   x = 1,246.77