Finding the Fourth Proportional to 3,385.35, 5,078.79 and 1,076.85

Step by Step Solution

1. Step 1: Write the proportion equation
   3,385.35 : 5,078.79 = 1,076.85 : x
2. Step 2: Convert to fraction form
   3,385.35/5,078.79 = 1,076.85/x
3. Step 3: Cross multiply
   3,385.35x = 5,078.79 × 1,076.85
4. Step 4: Simplify right side
   3,385.35x = 5,469,095.01
5. Step 5: Solve for x
   x = 5,469,095.01/3,385.35
6. Step 6: Final answer
   x = 1,615.52