Finding the Fourth Proportional to 3,452.54, 5,178.83 and 855.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,452.54 : 5,178.83 = 855.50 : x
2. Step 2: Convert to fraction form
   3,452.54/5,178.83 = 855.50/x
3. Step 3: Cross multiply
   3,452.54x = 5,178.83 × 855.50
4. Step 4: Simplify right side
   3,452.54x = 4,430,458.89
5. Step 5: Solve for x
   x = 4,430,458.89/3,452.54
6. Step 6: Final answer
   x = 1,283.25