Finding the Fourth Proportional to 3,667.54, 5,061.28 and 1,989.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.54 : 5,061.28 = 1,989.02 : x
2. Step 2: Convert to fraction form
   3,667.54/5,061.28 = 1,989.02/x
3. Step 3: Cross multiply
   3,667.54x = 5,061.28 × 1,989.02
4. Step 4: Simplify right side
   3,667.54x = 10,066,987.15
5. Step 5: Solve for x
   x = 10,066,987.15/3,667.54
6. Step 6: Final answer
   x = 2,744.89