Finding the Fourth Proportional to 1,819.17, 2,729.89 and 831.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,819.17 : 2,729.89 = 831.83 : x
2. Step 2: Convert to fraction form
   1,819.17/2,729.89 = 831.83/x
3. Step 3: Cross multiply
   1,819.17x = 2,729.89 × 831.83
4. Step 4: Simplify right side
   1,819.17x = 2,270,788.67
5. Step 5: Solve for x
   x = 2,270,788.67/1,819.17
6. Step 6: Final answer
   x = 1,248.26