Finding the Fourth Proportional to 2,868.67, 3,958.23 and 1,984.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,868.67 : 3,958.23 = 1,984.15 : x
2. Step 2: Convert to fraction form
   2,868.67/3,958.23 = 1,984.15/x
3. Step 3: Cross multiply
   2,868.67x = 3,958.23 × 1,984.15
4. Step 4: Simplify right side
   2,868.67x = 7,853,722.05
5. Step 5: Solve for x
   x = 7,853,722.05/2,868.67
6. Step 6: Final answer
   x = 2,737.76