Finding the Fourth Proportional to 6,456.69, 9,686.65 and 1,839.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,456.69 : 9,686.65 = 1,839.69 : x
2. Step 2: Convert to fraction form
   6,456.69/9,686.65 = 1,839.69/x
3. Step 3: Cross multiply
   6,456.69x = 9,686.65 × 1,839.69
4. Step 4: Simplify right side
   6,456.69x = 17,820,433.14
5. Step 5: Solve for x
   x = 17,820,433.14/6,456.69
6. Step 6: Final answer
   x = 2,760.00