Finding the Fourth Proportional to 4,078.72, 6,116.20 and 1,304.77

Step by Step Solution

1. Step 1: Write the proportion equation
   4,078.72 : 6,116.20 = 1,304.77 : x
2. Step 2: Convert to fraction form
   4,078.72/6,116.20 = 1,304.77/x
3. Step 3: Cross multiply
   4,078.72x = 6,116.20 × 1,304.77
4. Step 4: Simplify right side
   4,078.72x = 7,980,234.27
5. Step 5: Solve for x
   x = 7,980,234.27/4,078.72
6. Step 6: Final answer
   x = 1,956.55