Finding the Fourth Proportional to 3,665.28, 5,058.07 and 1,986.73

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.28 : 5,058.07 = 1,986.73 : x
2. Step 2: Convert to fraction form
   3,665.28/5,058.07 = 1,986.73/x
3. Step 3: Cross multiply
   3,665.28x = 5,058.07 × 1,986.73
4. Step 4: Simplify right side
   3,665.28x = 10,049,009.25
5. Step 5: Solve for x
   x = 10,049,009.25/3,665.28
6. Step 6: Final answer
   x = 2,741.68