Finding the Fourth Proportional to 3,385.56, 5,078.28 and 1,077

Step by Step Solution

1. Step 1: Write the proportion equation
   3,385.56 : 5,078.28 = 1,077 : x
2. Step 2: Convert to fraction form
   3,385.56/5,078.28 = 1,077/x
3. Step 3: Cross multiply
   3,385.56x = 5,078.28 × 1,077
4. Step 4: Simplify right side
   3,385.56x = 5,469,307.56
5. Step 5: Solve for x
   x = 5,469,307.56/3,385.56
6. Step 6: Final answer
   x = 1,615.48