Finding the Fourth Proportional to 3,665.48, 5,058.30 and 2,072.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.48 : 5,058.30 = 2,072.10 : x
2. Step 2: Convert to fraction form
   3,665.48/5,058.30 = 2,072.10/x
3. Step 3: Cross multiply
   3,665.48x = 5,058.30 × 2,072.10
4. Step 4: Simplify right side
   3,665.48x = 10,481,330.17
5. Step 5: Solve for x
   x = 10,481,330.17/3,665.48
6. Step 6: Final answer
   x = 2,859.47