Finding the Fourth Proportional to 3,859.72, 5,326.50 and 2,287.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,859.72 : 5,326.50 = 2,287.24 : x
2. Step 2: Convert to fraction form
   3,859.72/5,326.50 = 2,287.24/x
3. Step 3: Cross multiply
   3,859.72x = 5,326.50 × 2,287.24
4. Step 4: Simplify right side
   3,859.72x = 12,182,983.86
5. Step 5: Solve for x
   x = 12,182,983.86/3,859.72
6. Step 6: Final answer
   x = 3,156.44