Finding the Fourth Proportional to 3,813.05, 5,721.69 and 1,865.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,813.05 : 5,721.69 = 1,865.27 : x
2. Step 2: Convert to fraction form
   3,813.05/5,721.69 = 1,865.27/x
3. Step 3: Cross multiply
   3,813.05x = 5,721.69 × 1,865.27
4. Step 4: Simplify right side
   3,813.05x = 10,672,496.71
5. Step 5: Solve for x
   x = 10,672,496.71/3,813.05
6. Step 6: Final answer
   x = 2,798.94