Finding the Fourth Proportional to 3,665.56, 5,058.45 and 1,986.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.56 : 5,058.45 = 1,986.94 : x
2. Step 2: Convert to fraction form
   3,665.56/5,058.45 = 1,986.94/x
3. Step 3: Cross multiply
   3,665.56x = 5,058.45 × 1,986.94
4. Step 4: Simplify right side
   3,665.56x = 10,050,836.64
5. Step 5: Solve for x
   x = 10,050,836.64/3,665.56
6. Step 6: Final answer
   x = 2,741.96