Finding the Fourth Proportional to 3,667.87, 5,061.69 and 1,989.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.87 : 5,061.69 = 1,989.29 : x
2. Step 2: Convert to fraction form
   3,667.87/5,061.69 = 1,989.29/x
3. Step 3: Cross multiply
   3,667.87x = 5,061.69 × 1,989.29
4. Step 4: Simplify right side
   3,667.87x = 10,069,169.30
5. Step 5: Solve for x
   x = 10,069,169.30/3,667.87
6. Step 6: Final answer
   x = 2,745.24