Finding the Fourth Proportional to 2,580.69, 3,561.18 and 1,401.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.69 : 3,561.18 = 1,401.74 : x
2. Step 2: Convert to fraction form
   2,580.69/3,561.18 = 1,401.74/x
3. Step 3: Cross multiply
   2,580.69x = 3,561.18 × 1,401.74
4. Step 4: Simplify right side
   2,580.69x = 4,991,846.63
5. Step 5: Solve for x
   x = 4,991,846.63/2,580.69
6. Step 6: Final answer
   x = 1,934.30