Finding the Fourth Proportional to 2,856.82, 3,949.06 and 2,740.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.82 : 3,949.06 = 2,740.54 : x
2. Step 2: Convert to fraction form
   2,856.82/3,949.06 = 2,740.54/x
3. Step 3: Cross multiply
   2,856.82x = 3,949.06 × 2,740.54
4. Step 4: Simplify right side
   2,856.82x = 10,822,556.89
5. Step 5: Solve for x
   x = 10,822,556.89/2,856.82
6. Step 6: Final answer
   x = 3,788.32