Finding the Fourth Proportional to 1,517.31, 2,093.85 and 854.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,517.31 : 2,093.85 = 854.15 : x
2. Step 2: Convert to fraction form
   1,517.31/2,093.85 = 854.15/x
3. Step 3: Cross multiply
   1,517.31x = 2,093.85 × 854.15
4. Step 4: Simplify right side
   1,517.31x = 1,788,451.51
5. Step 5: Solve for x
   x = 1,788,451.51/1,517.31
6. Step 6: Final answer
   x = 1,178.70