Finding the Fourth Proportional to 1,518.55, 2,095.61 and 855.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,518.55 : 2,095.61 = 855.42 : x
2. Step 2: Convert to fraction form
   1,518.55/2,095.61 = 855.42/x
3. Step 3: Cross multiply
   1,518.55x = 2,095.61 × 855.42
4. Step 4: Simplify right side
   1,518.55x = 1,792,616.23
5. Step 5: Solve for x
   x = 1,792,616.23/1,518.55
6. Step 6: Final answer
   x = 1,180.48