Finding the Fourth Proportional to 2,065.50, 3,097.49 and 678.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.50 : 3,097.49 = 678.43 : x
2. Step 2: Convert to fraction form
   2,065.50/3,097.49 = 678.43/x
3. Step 3: Cross multiply
   2,065.50x = 3,097.49 × 678.43
4. Step 4: Simplify right side
   2,065.50x = 2,101,417.01
5. Step 5: Solve for x
   x = 2,101,417.01/2,065.50
6. Step 6: Final answer
   x = 1,017.39