Finding the Fourth Proportional to 1,040.06, 1,436.76 and 831.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.06 : 1,436.76 = 831.62 : x
2. Step 2: Convert to fraction form
   1,040.06/1,436.76 = 831.62/x
3. Step 3: Cross multiply
   1,040.06x = 1,436.76 × 831.62
4. Step 4: Simplify right side
   1,040.06x = 1,194,838.35
5. Step 5: Solve for x
   x = 1,194,838.35/1,040.06
6. Step 6: Final answer
   x = 1,148.82