Finding the Fourth Proportional to 3,868.05, 5,809.82 and 2,311.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,868.05 : 5,809.82 = 2,311.10 : x
2. Step 2: Convert to fraction form
   3,868.05/5,809.82 = 2,311.10/x
3. Step 3: Cross multiply
   3,868.05x = 5,809.82 × 2,311.10
4. Step 4: Simplify right side
   3,868.05x = 13,427,075.00
5. Step 5: Solve for x
   x = 13,427,075.00/3,868.05
6. Step 6: Final answer
   x = 3,471.28