Finding the Fourth Proportional to 2,560.78, 3,533.88 and 1,441.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,560.78 : 3,533.88 = 1,441.73 : x
2. Step 2: Convert to fraction form
   2,560.78/3,533.88 = 1,441.73/x
3. Step 3: Cross multiply
   2,560.78x = 3,533.88 × 1,441.73
4. Step 4: Simplify right side
   2,560.78x = 5,094,909.65
5. Step 5: Solve for x
   x = 5,094,909.65/2,560.78
6. Step 6: Final answer
   x = 1,989.59