Finding the Fourth Proportional to 2,078.93, 3,118.97 and 908.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.93 : 3,118.97 = 908.72 : x
2. Step 2: Convert to fraction form
   2,078.93/3,118.97 = 908.72/x
3. Step 3: Cross multiply
   2,078.93x = 3,118.97 × 908.72
4. Step 4: Simplify right side
   2,078.93x = 2,834,270.42
5. Step 5: Solve for x
   x = 2,834,270.42/2,078.93
6. Step 6: Final answer
   x = 1,363.33