Finding the Fourth Proportional to 2,561.45, 3,535.47 and 1,567.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.45 : 3,535.47 = 1,567.56 : x
2. Step 2: Convert to fraction form
   2,561.45/3,535.47 = 1,567.56/x
3. Step 3: Cross multiply
   2,561.45x = 3,535.47 × 1,567.56
4. Step 4: Simplify right side
   2,561.45x = 5,542,061.35
5. Step 5: Solve for x
   x = 5,542,061.35/2,561.45
6. Step 6: Final answer
   x = 2,163.64