Finding the Fourth Proportional to 2,580.12, 3,560.55 and 1,401.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.12 : 3,560.55 = 1,401.18 : x
2. Step 2: Convert to fraction form
   2,580.12/3,560.55 = 1,401.18/x
3. Step 3: Cross multiply
   2,580.12x = 3,560.55 × 1,401.18
4. Step 4: Simplify right side
   2,580.12x = 4,988,971.45
5. Step 5: Solve for x
   x = 4,988,971.45/2,580.12
6. Step 6: Final answer
   x = 1,933.62