Finding the Fourth Proportional to 2,065.33, 3,097.35 and 678.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.33 : 3,097.35 = 678.35 : x
2. Step 2: Convert to fraction form
   2,065.33/3,097.35 = 678.35/x
3. Step 3: Cross multiply
   2,065.33x = 3,097.35 × 678.35
4. Step 4: Simplify right side
   2,065.33x = 2,101,077.42
5. Step 5: Solve for x
   x = 2,101,077.42/2,065.33
6. Step 6: Final answer
   x = 1,017.31