Finding the Fourth Proportional to 2,580.56, 3,561.18 and 1,401.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.56 : 3,561.18 = 1,401.65 : x
2. Step 2: Convert to fraction form
   2,580.56/3,561.18 = 1,401.65/x
3. Step 3: Cross multiply
   2,580.56x = 3,561.18 × 1,401.65
4. Step 4: Simplify right side
   2,580.56x = 4,991,527.95
5. Step 5: Solve for x
   x = 4,991,527.95/2,580.56
6. Step 6: Final answer
   x = 1,934.28