Finding the Fourth Proportional to 3,856.18, 5,321.56 and 2,087.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,856.18 : 5,321.56 = 2,087.82 : x
2. Step 2: Convert to fraction form
   3,856.18/5,321.56 = 2,087.82/x
3. Step 3: Cross multiply
   3,856.18x = 5,321.56 × 2,087.82
4. Step 4: Simplify right side
   3,856.18x = 11,110,459.40
5. Step 5: Solve for x
   x = 11,110,459.40/3,856.18
6. Step 6: Final answer
   x = 2,881.21