Finding the Fourth Proportional to 3,667.68, 5,061.37 and 1,989.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.68 : 5,061.37 = 1,989.07 : x
2. Step 2: Convert to fraction form
   3,667.68/5,061.37 = 1,989.07/x
3. Step 3: Cross multiply
   3,667.68x = 5,061.37 × 1,989.07
4. Step 4: Simplify right side
   3,667.68x = 10,067,419.23
5. Step 5: Solve for x
   x = 10,067,419.23/3,667.68
6. Step 6: Final answer
   x = 2,744.90