Finding the Fourth Proportional to 2,004.78, 3,004.94 and 1,078.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,004.78 : 3,004.94 = 1,078.02 : x
2. Step 2: Convert to fraction form
   2,004.78/3,004.94 = 1,078.02/x
3. Step 3: Cross multiply
   2,004.78x = 3,004.94 × 1,078.02
4. Step 4: Simplify right side
   2,004.78x = 3,239,385.42
5. Step 5: Solve for x
   x = 3,239,385.42/2,004.78
6. Step 6: Final answer
   x = 1,615.83