Finding the Fourth Proportional to 2,982.81, 4,117.92 and 2,667.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,982.81 : 4,117.92 = 2,667.31 : x
2. Step 2: Convert to fraction form
   2,982.81/4,117.92 = 2,667.31/x
3. Step 3: Cross multiply
   2,982.81x = 4,117.92 × 2,667.31
4. Step 4: Simplify right side
   2,982.81x = 10,983,769.20
5. Step 5: Solve for x
   x = 10,983,769.20/2,982.81
6. Step 6: Final answer
   x = 3,682.36