Finding the Fourth Proportional to 2,078.62, 2,868.78 and 1,194.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.62 : 2,868.78 = 1,194.40 : x
2. Step 2: Convert to fraction form
   2,078.62/2,868.78 = 1,194.40/x
3. Step 3: Cross multiply
   2,078.62x = 2,868.78 × 1,194.40
4. Step 4: Simplify right side
   2,078.62x = 3,426,474.42
5. Step 5: Solve for x
   x = 3,426,474.42/2,078.62
6. Step 6: Final answer
   x = 1,648.44