Finding the Fourth Proportional to 2,580.22, 3,560.70 and 1,401.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.22 : 3,560.70 = 1,401.31 : x
2. Step 2: Convert to fraction form
   2,580.22/3,560.70 = 1,401.31/x
3. Step 3: Cross multiply
   2,580.22x = 3,560.70 × 1,401.31
4. Step 4: Simplify right side
   2,580.22x = 4,989,644.52
5. Step 5: Solve for x
   x = 4,989,644.52/2,580.22
6. Step 6: Final answer
   x = 1,933.81