Finding the Fourth Proportional to 3,856.88, 5,785.59 and 1,908.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,856.88 : 5,785.59 = 1,908.56 : x
2. Step 2: Convert to fraction form
   3,856.88/5,785.59 = 1,908.56/x
3. Step 3: Cross multiply
   3,856.88x = 5,785.59 × 1,908.56
4. Step 4: Simplify right side
   3,856.88x = 11,042,167.27
5. Step 5: Solve for x
   x = 11,042,167.27/3,856.88
6. Step 6: Final answer
   x = 2,862.98