Finding the Fourth Proportional to 2,560.78, 3,534.22 and 1,441.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,560.78 : 3,534.22 = 1,441.94 : x
2. Step 2: Convert to fraction form
   2,560.78/3,534.22 = 1,441.94/x
3. Step 3: Cross multiply
   2,560.78x = 3,534.22 × 1,441.94
4. Step 4: Simplify right side
   2,560.78x = 5,096,133.19
5. Step 5: Solve for x
   x = 5,096,133.19/2,560.78
6. Step 6: Final answer
   x = 1,990.07