Finding the Fourth Proportional to 2,046.96, 3,068.52 and 678

Step by Step Solution

1. Step 1: Write the proportion equation
   2,046.96 : 3,068.52 = 678 : x
2. Step 2: Convert to fraction form
   2,046.96/3,068.52 = 678/x
3. Step 3: Cross multiply
   2,046.96x = 3,068.52 × 678
4. Step 4: Simplify right side
   2,046.96x = 2,080,456.56
5. Step 5: Solve for x
   x = 2,080,456.56/2,046.96
6. Step 6: Final answer
   x = 1,016.36