Finding the Fourth Proportional to 1,831.52, 2,748.18 and 857.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,831.52 : 2,748.18 = 857.69 : x
2. Step 2: Convert to fraction form
   1,831.52/2,748.18 = 857.69/x
3. Step 3: Cross multiply
   1,831.52x = 2,748.18 × 857.69
4. Step 4: Simplify right side
   1,831.52x = 2,357,086.50
5. Step 5: Solve for x
   x = 2,357,086.50/1,831.52
6. Step 6: Final answer
   x = 1,286.96