Finding the Fourth Proportional to 2,335.54, 3,222.78 and 1,340.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.54 : 3,222.78 = 1,340.78 : x
2. Step 2: Convert to fraction form
   2,335.54/3,222.78 = 1,340.78/x
3. Step 3: Cross multiply
   2,335.54x = 3,222.78 × 1,340.78
4. Step 4: Simplify right side
   2,335.54x = 4,321,038.97
5. Step 5: Solve for x
   x = 4,321,038.97/2,335.54
6. Step 6: Final answer
   x = 1,850.12