Finding the Fourth Proportional to 2,078.03, 3,114.89 and 828.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.03 : 3,114.89 = 828.15 : x
2. Step 2: Convert to fraction form
   2,078.03/3,114.89 = 828.15/x
3. Step 3: Cross multiply
   2,078.03x = 3,114.89 × 828.15
4. Step 4: Simplify right side
   2,078.03x = 2,579,596.15
5. Step 5: Solve for x
   x = 2,579,596.15/2,078.03
6. Step 6: Final answer
   x = 1,241.37