Finding the Fourth Proportional to 3,855.68, 5,320.83 and 2,087.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,855.68 : 5,320.83 = 2,087.27 : x
2. Step 2: Convert to fraction form
   3,855.68/5,320.83 = 2,087.27/x
3. Step 3: Cross multiply
   3,855.68x = 5,320.83 × 2,087.27
4. Step 4: Simplify right side
   3,855.68x = 11,106,008.83
5. Step 5: Solve for x
   x = 11,106,008.83/3,855.68
6. Step 6: Final answer
   x = 2,880.43