Finding the Fourth Proportional to 2,704.33, 4,055.90 and 855.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,704.33 : 4,055.90 = 855.59 : x
2. Step 2: Convert to fraction form
   2,704.33/4,055.90 = 855.59/x
3. Step 3: Cross multiply
   2,704.33x = 4,055.90 × 855.59
4. Step 4: Simplify right side
   2,704.33x = 3,470,187.48
5. Step 5: Solve for x
   x = 3,470,187.48/2,704.33
6. Step 6: Final answer
   x = 1,283.20