Finding the Fourth Proportional to 3,856.78, 5,322.37 and 2,088.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,856.78 : 5,322.37 = 2,088.39 : x
2. Step 2: Convert to fraction form
   3,856.78/5,322.37 = 2,088.39/x
3. Step 3: Cross multiply
   3,856.78x = 5,322.37 × 2,088.39
4. Step 4: Simplify right side
   3,856.78x = 11,115,162.89
5. Step 5: Solve for x
   x = 11,115,162.89/3,856.78
6. Step 6: Final answer
   x = 2,881.98