Finding the Fourth Proportional to 2,580.91, 3,561.64 and 1,401.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.91 : 3,561.64 = 1,401.95 : x
2. Step 2: Convert to fraction form
   2,580.91/3,561.64 = 1,401.95/x
3. Step 3: Cross multiply
   2,580.91x = 3,561.64 × 1,401.95
4. Step 4: Simplify right side
   2,580.91x = 4,993,246.60
5. Step 5: Solve for x
   x = 4,993,246.60/2,580.91
6. Step 6: Final answer
   x = 1,934.69