Finding the Fourth Proportional to 3,665.58, 5,058.42 and 1,986.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.58 : 5,058.42 = 1,986.92 : x
2. Step 2: Convert to fraction form
   3,665.58/5,058.42 = 1,986.92/x
3. Step 3: Cross multiply
   3,665.58x = 5,058.42 × 1,986.92
4. Step 4: Simplify right side
   3,665.58x = 10,050,675.87
5. Step 5: Solve for x
   x = 10,050,675.87/3,665.58
6. Step 6: Final answer
   x = 2,741.91