Finding the Fourth Proportional to 2,580.73, 3,561.40 and 1,401.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.73 : 3,561.40 = 1,401.79 : x
2. Step 2: Convert to fraction form
   2,580.73/3,561.40 = 1,401.79/x
3. Step 3: Cross multiply
   2,580.73x = 3,561.40 × 1,401.79
4. Step 4: Simplify right side
   2,580.73x = 4,992,334.43
5. Step 5: Solve for x
   x = 4,992,334.43/2,580.73
6. Step 6: Final answer
   x = 1,934.47