Finding the Fourth Proportional to 3,667.75, 5,061.45 and 1,989.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.75 : 5,061.45 = 1,989.16 : x
2. Step 2: Convert to fraction form
   3,667.75/5,061.45 = 1,989.16/x
3. Step 3: Cross multiply
   3,667.75x = 5,061.45 × 1,989.16
4. Step 4: Simplify right side
   3,667.75x = 10,068,028.69
5. Step 5: Solve for x
   x = 10,068,028.69/3,667.75
6. Step 6: Final answer
   x = 2,745.02