Finding the Fourth Proportional to 3,668.48, 5,062.37 and 1,989.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,668.48 : 5,062.37 = 1,989.86 : x
2. Step 2: Convert to fraction form
   3,668.48/5,062.37 = 1,989.86/x
3. Step 3: Cross multiply
   3,668.48x = 5,062.37 × 1,989.86
4. Step 4: Simplify right side
   3,668.48x = 10,073,410.27
5. Step 5: Solve for x
   x = 10,073,410.27/3,668.48
6. Step 6: Final answer
   x = 2,745.93