Finding the Fourth Proportional to 3,665.48, 5,057.91 and 2,072.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.48 : 5,057.91 = 2,072.03 : x
2. Step 2: Convert to fraction form
   3,665.48/5,057.91 = 2,072.03/x
3. Step 3: Cross multiply
   3,665.48x = 5,057.91 × 2,072.03
4. Step 4: Simplify right side
   3,665.48x = 10,480,115.97
5. Step 5: Solve for x
   x = 10,480,115.97/3,665.48
6. Step 6: Final answer
   x = 2,859.14