Finding the Fourth Proportional to 2,615.78, 3,609.69 and 1,567.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.78 : 3,609.69 = 1,567.10 : x
2. Step 2: Convert to fraction form
   2,615.78/3,609.69 = 1,567.10/x
3. Step 3: Cross multiply
   2,615.78x = 3,609.69 × 1,567.10
4. Step 4: Simplify right side
   2,615.78x = 5,656,745.20
5. Step 5: Solve for x
   x = 5,656,745.20/2,615.78
6. Step 6: Final answer
   x = 2,162.55