Finding the Fourth Proportional to 2,559.55, 3,530.71 and 1,615.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.55 : 3,530.71 = 1,615.01 : x
2. Step 2: Convert to fraction form
   2,559.55/3,530.71 = 1,615.01/x
3. Step 3: Cross multiply
   2,559.55x = 3,530.71 × 1,615.01
4. Step 4: Simplify right side
   2,559.55x = 5,702,107.24
5. Step 5: Solve for x
   x = 5,702,107.24/2,559.55
6. Step 6: Final answer
   x = 2,227.78