Finding the Fourth Proportional to 2,435.57, 3,361.78 and 1,441.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,435.57 : 3,361.78 = 1,441.20 : x
2. Step 2: Convert to fraction form
   2,435.57/3,361.78 = 1,441.20/x
3. Step 3: Cross multiply
   2,435.57x = 3,361.78 × 1,441.20
4. Step 4: Simplify right side
   2,435.57x = 4,844,973.32
5. Step 5: Solve for x
   x = 4,844,973.32/2,435.57
6. Step 6: Final answer
   x = 1,989.26