Finding the Fourth Proportional to 2,560.48, 3,533.59 and 1,441.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,560.48 : 3,533.59 = 1,441.40 : x
2. Step 2: Convert to fraction form
   2,560.48/3,533.59 = 1,441.40/x
3. Step 3: Cross multiply
   2,560.48x = 3,533.59 × 1,441.40
4. Step 4: Simplify right side
   2,560.48x = 5,093,300.76
5. Step 5: Solve for x
   x = 5,093,300.76/2,560.48
6. Step 6: Final answer
   x = 1,989.20