Finding the Fourth Proportional to 2,065.09, 3,097.34 and 678.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.09 : 3,097.34 = 678.48 : x
2. Step 2: Convert to fraction form
   2,065.09/3,097.34 = 678.48/x
3. Step 3: Cross multiply
   2,065.09x = 3,097.34 × 678.48
4. Step 4: Simplify right side
   2,065.09x = 2,101,490.38
5. Step 5: Solve for x
   x = 2,101,490.38/2,065.09
6. Step 6: Final answer
   x = 1,017.63