Finding the Fourth Proportional to 2,580.28, 3,560.74 and 1,401.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.28 : 3,560.74 = 1,401.34 : x
2. Step 2: Convert to fraction form
   2,580.28/3,560.74 = 1,401.34/x
3. Step 3: Cross multiply
   2,580.28x = 3,560.74 × 1,401.34
4. Step 4: Simplify right side
   2,580.28x = 4,989,807.39
5. Step 5: Solve for x
   x = 4,989,807.39/2,580.28
6. Step 6: Final answer
   x = 1,933.82