Finding the Fourth Proportional to 2,456.75, 3,394.17 and 2,087.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.75 : 3,394.17 = 2,087.60 : x
2. Step 2: Convert to fraction form
   2,456.75/3,394.17 = 2,087.60/x
3. Step 3: Cross multiply
   2,456.75x = 3,394.17 × 2,087.60
4. Step 4: Simplify right side
   2,456.75x = 7,085,652.32
5. Step 5: Solve for x
   x = 7,085,652.32/2,456.75
6. Step 6: Final answer
   x = 2,884.15