Finding the Fourth Proportional to 2,065.02, 3,097.18 and 678.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.02 : 3,097.18 = 678.39 : x
2. Step 2: Convert to fraction form
   2,065.02/3,097.18 = 678.39/x
3. Step 3: Cross multiply
   2,065.02x = 3,097.18 × 678.39
4. Step 4: Simplify right side
   2,065.02x = 2,101,077.06
5. Step 5: Solve for x
   x = 2,101,077.06/2,065.02
6. Step 6: Final answer
   x = 1,017.46