Finding the Fourth Proportional to 2,078.18, 2,871.69 and 1,976.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.18 : 2,871.69 = 1,976.94 : x
2. Step 2: Convert to fraction form
   2,078.18/2,871.69 = 1,976.94/x
3. Step 3: Cross multiply
   2,078.18x = 2,871.69 × 1,976.94
4. Step 4: Simplify right side
   2,078.18x = 5,677,158.83
5. Step 5: Solve for x
   x = 5,677,158.83/2,078.18
6. Step 6: Final answer
   x = 2,731.79