Finding the Fourth Proportional to 2,064.70, 3,096.69 and 678.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.70 : 3,096.69 = 678.00 : x
2. Step 2: Convert to fraction form
   2,064.70/3,096.69 = 678.00/x
3. Step 3: Cross multiply
   2,064.70x = 3,096.69 × 678.00
4. Step 4: Simplify right side
   2,064.70x = 2,099,540.34
5. Step 5: Solve for x
   x = 2,099,540.34/2,064.70
6. Step 6: Final answer
   x = 1,016.88