Finding the Fourth Proportional to 2,580.91, 3,561.04 and 1,461.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.91 : 3,561.04 = 1,461.60 : x
2. Step 2: Convert to fraction form
   2,580.91/3,561.04 = 1,461.60/x
3. Step 3: Cross multiply
   2,580.91x = 3,561.04 × 1,461.60
4. Step 4: Simplify right side
   2,580.91x = 5,204,821.31
5. Step 5: Solve for x
   x = 5,204,821.31/2,580.91
6. Step 6: Final answer
   x = 2,016.66