Finding the Fourth Proportional to 3,131.76, 4,322.33 and 1,872.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.76 : 4,322.33 = 1,872.42 : x
2. Step 2: Convert to fraction form
   3,131.76/4,322.33 = 1,872.42/x
3. Step 3: Cross multiply
   3,131.76x = 4,322.33 × 1,872.42
4. Step 4: Simplify right side
   3,131.76x = 8,093,207.78
5. Step 5: Solve for x
   x = 8,093,207.78/3,131.76
6. Step 6: Final answer
   x = 2,584.24