Finding the Fourth Proportional to 2,389.15, 3,299.59 and 1,831.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.15 : 3,299.59 = 1,831.46 : x
2. Step 2: Convert to fraction form
   2,389.15/3,299.59 = 1,831.46/x
3. Step 3: Cross multiply
   2,389.15x = 3,299.59 × 1,831.46
4. Step 4: Simplify right side
   2,389.15x = 6,043,061.15
5. Step 5: Solve for x
   x = 6,043,061.15/2,389.15
6. Step 6: Final answer
   x = 2,529.38