Finding the Fourth Proportional to 2,065.45, 3,097.52 and 678.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,065.45 : 3,097.52 = 678.47 : x
2. Step 2: Convert to fraction form
   2,065.45/3,097.52 = 678.47/x
3. Step 3: Cross multiply
   2,065.45x = 3,097.52 × 678.47
4. Step 4: Simplify right side
   2,065.45x = 2,101,561.19
5. Step 5: Solve for x
   x = 2,101,561.19/2,065.45
6. Step 6: Final answer
   x = 1,017.48