Finding the Fourth Proportional to 2,143.07, 2,960.71 and 1,831.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.07 : 2,960.71 = 1,831.56 : x
2. Step 2: Convert to fraction form
   2,143.07/2,960.71 = 1,831.56/x
3. Step 3: Cross multiply
   2,143.07x = 2,960.71 × 1,831.56
4. Step 4: Simplify right side
   2,143.07x = 5,422,703.20
5. Step 5: Solve for x
   x = 5,422,703.20/2,143.07
6. Step 6: Final answer
   x = 2,530.35