Finding the Fourth Proportional to 3,801.30, 5,687.37 and 2,831.73

Step by Step Solution

1. Step 1: Write the proportion equation
   3,801.30 : 5,687.37 = 2,831.73 : x
2. Step 2: Convert to fraction form
   3,801.30/5,687.37 = 2,831.73/x
3. Step 3: Cross multiply
   3,801.30x = 5,687.37 × 2,831.73
4. Step 4: Simplify right side
   3,801.30x = 16,105,096.25
5. Step 5: Solve for x
   x = 16,105,096.25/3,801.30
6. Step 6: Final answer
   x = 4,236.73