Finding the Fourth Proportional to 2,615.88, 3,609.72 and 1,567.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.88 : 3,609.72 = 1,567.80 : x
2. Step 2: Convert to fraction form
   2,615.88/3,609.72 = 1,567.80/x
3. Step 3: Cross multiply
   2,615.88x = 3,609.72 × 1,567.80
4. Step 4: Simplify right side
   2,615.88x = 5,659,319.02
5. Step 5: Solve for x
   x = 5,659,319.02/2,615.88
6. Step 6: Final answer
   x = 2,163.45