Finding the Fourth Proportional to 3,144.11, 4,711.69 and 2,315.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,144.11 : 4,711.69 = 2,315.87 : x
2. Step 2: Convert to fraction form
   3,144.11/4,711.69 = 2,315.87/x
3. Step 3: Cross multiply
   3,144.11x = 4,711.69 × 2,315.87
4. Step 4: Simplify right side
   3,144.11x = 10,911,632.17
5. Step 5: Solve for x
   x = 10,911,632.17/3,144.11
6. Step 6: Final answer
   x = 3,470.51