Finding the Fourth Proportional to 3,665.45, 5,058.25 and 1,986.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.45 : 5,058.25 = 1,986.83 : x
2. Step 2: Convert to fraction form
   3,665.45/5,058.25 = 1,986.83/x
3. Step 3: Cross multiply
   3,665.45x = 5,058.25 × 1,986.83
4. Step 4: Simplify right side
   3,665.45x = 10,049,871.56
5. Step 5: Solve for x
   x = 10,049,871.56/3,665.45
6. Step 6: Final answer
   x = 2,741.78