Finding the Fourth Proportional to 3,667.97, 5,061.74 and 1,989.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.97 : 5,061.74 = 1,989.38 : x
2. Step 2: Convert to fraction form
   3,667.97/5,061.74 = 1,989.38/x
3. Step 3: Cross multiply
   3,667.97x = 5,061.74 × 1,989.38
4. Step 4: Simplify right side
   3,667.97x = 10,069,689.07
5. Step 5: Solve for x
   x = 10,069,689.07/3,667.97
6. Step 6: Final answer
   x = 2,745.31