Finding the Fourth Proportional to 2,355.78, 3,251.78 and 1,361.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,355.78 : 3,251.78 = 1,361.46 : x
2. Step 2: Convert to fraction form
   2,355.78/3,251.78 = 1,361.46/x
3. Step 3: Cross multiply
   2,355.78x = 3,251.78 × 1,361.46
4. Step 4: Simplify right side
   2,355.78x = 4,427,161.59
5. Step 5: Solve for x
   x = 4,427,161.59/2,355.78
6. Step 6: Final answer
   x = 1,879.28