Finding the Fourth Proportional to 1,517.78, 2,094.49 and 854.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,517.78 : 2,094.49 = 854.59 : x
2. Step 2: Convert to fraction form
   1,517.78/2,094.49 = 854.59/x
3. Step 3: Cross multiply
   1,517.78x = 2,094.49 × 854.59
4. Step 4: Simplify right side
   1,517.78x = 1,789,930.21
5. Step 5: Solve for x
   x = 1,789,930.21/1,517.78
6. Step 6: Final answer
   x = 1,179.31