Finding the Fourth Proportional to 2,856.25, 3,926.48 and 2,456.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.25 : 3,926.48 = 2,456.45 : x
2. Step 2: Convert to fraction form
   2,856.25/3,926.48 = 2,456.45/x
3. Step 3: Cross multiply
   2,856.25x = 3,926.48 × 2,456.45
4. Step 4: Simplify right side
   2,856.25x = 9,645,184.61
5. Step 5: Solve for x
   x = 9,645,184.61/2,856.25
6. Step 6: Final answer
   x = 3,376.87