Finding the Fourth Proportional to 1,517.72, 2,094.50 and 854.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,517.72 : 2,094.50 = 854.78 : x
2. Step 2: Convert to fraction form
   1,517.72/2,094.50 = 854.78/x
3. Step 3: Cross multiply
   1,517.72x = 2,094.50 × 854.78
4. Step 4: Simplify right side
   1,517.72x = 1,790,328.37
5. Step 5: Solve for x
   x = 1,790,328.37/1,517.72
6. Step 6: Final answer
   x = 1,179.62