Finding the Fourth Proportional to 3,668.18, 5,062.06 and 1,989.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,668.18 : 5,062.06 = 1,989.57 : x
2. Step 2: Convert to fraction form
   3,668.18/5,062.06 = 1,989.57/x
3. Step 3: Cross multiply
   3,668.18x = 5,062.06 × 1,989.57
4. Step 4: Simplify right side
   3,668.18x = 10,071,297.40
5. Step 5: Solve for x
   x = 10,071,297.40/3,668.18
6. Step 6: Final answer
   x = 2,745.59