Finding the Fourth Proportional to 2,087.93, 3,131.82 and 854.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.93 : 3,131.82 = 854.97 : x
2. Step 2: Convert to fraction form
   2,087.93/3,131.82 = 854.97/x
3. Step 3: Cross multiply
   2,087.93x = 3,131.82 × 854.97
4. Step 4: Simplify right side
   2,087.93x = 2,677,612.15
5. Step 5: Solve for x
   x = 2,677,612.15/2,087.93
6. Step 6: Final answer
   x = 1,282.43