Finding the Fourth Proportional to 3,664.93, 5,057.57 and 1,986.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,664.93 : 5,057.57 = 1,986.30 : x
2. Step 2: Convert to fraction form
   3,664.93/5,057.57 = 1,986.30/x
3. Step 3: Cross multiply
   3,664.93x = 5,057.57 × 1,986.30
4. Step 4: Simplify right side
   3,664.93x = 10,045,851.29
5. Step 5: Solve for x
   x = 10,045,851.29/3,664.93
6. Step 6: Final answer
   x = 2,741.08