Finding the Fourth Proportional to 1,518.95, 2,096.15 and 855.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,518.95 : 2,096.15 = 855.79 : x
2. Step 2: Convert to fraction form
   1,518.95/2,096.15 = 855.79/x
3. Step 3: Cross multiply
   1,518.95x = 2,096.15 × 855.79
4. Step 4: Simplify right side
   1,518.95x = 1,793,864.21
5. Step 5: Solve for x
   x = 1,793,864.21/1,518.95
6. Step 6: Final answer
   x = 1,180.99