Finding the Fourth Proportional to 2,983.61, 4,119.39 and 2,667.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,983.61 : 4,119.39 = 2,667.87 : x
2. Step 2: Convert to fraction form
   2,983.61/4,119.39 = 2,667.87/x
3. Step 3: Cross multiply
   2,983.61x = 4,119.39 × 2,667.87
4. Step 4: Simplify right side
   2,983.61x = 10,989,997.00
5. Step 5: Solve for x
   x = 10,989,997.00/2,983.61
6. Step 6: Final answer
   x = 3,683.45