Finding the Fourth Proportional to 1,518.72, 2,095.40 and 855.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,518.72 : 2,095.40 = 855.34 : x
2. Step 2: Convert to fraction form
   1,518.72/2,095.40 = 855.34/x
3. Step 3: Cross multiply
   1,518.72x = 2,095.40 × 855.34
4. Step 4: Simplify right side
   1,518.72x = 1,792,279.44
5. Step 5: Solve for x
   x = 1,792,279.44/1,518.72
6. Step 6: Final answer
   x = 1,180.12