Finding the Fourth Proportional to 2,643.72, 3,647.85 and 1,524.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643.72 : 3,647.85 = 1,524.71 : x
2. Step 2: Convert to fraction form
   2,643.72/3,647.85 = 1,524.71/x
3. Step 3: Cross multiply
   2,643.72x = 3,647.85 × 1,524.71
4. Step 4: Simplify right side
   2,643.72x = 5,561,895.13
5. Step 5: Solve for x
   x = 5,561,895.13/2,643.72
6. Step 6: Final answer
   x = 2,103.81