Finding the Fourth Proportional to 2,065.10, 3,096.84 and 678.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.10 : 3,096.84 = 678.11 : x
2. Step 2: Convert to fraction form
   2,065.10/3,096.84 = 678.11/x
3. Step 3: Cross multiply
   2,065.10x = 3,096.84 × 678.11
4. Step 4: Simplify right side
   2,065.10x = 2,099,998.17
5. Step 5: Solve for x
   x = 2,099,998.17/2,065.10
6. Step 6: Final answer
   x = 1,016.90