Finding the Fourth Proportional to 2,580, 3,561.28 and 1,610.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580 : 3,561.28 = 1,610.62 : x
2. Step 2: Convert to fraction form
   2,580/3,561.28 = 1,610.62/x
3. Step 3: Cross multiply
   2,580x = 3,561.28 × 1,610.62
4. Step 4: Simplify right side
   2,580x = 5,735,868.79
5. Step 5: Solve for x
   x = 5,735,868.79/2,580
6. Step 6: Final answer
   x = 2,223.20