Finding the Fourth Proportional to 2,339.69, 3,509.08 and 859.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.69 : 3,509.08 = 859.82 : x
2. Step 2: Convert to fraction form
   2,339.69/3,509.08 = 859.82/x
3. Step 3: Cross multiply
   2,339.69x = 3,509.08 × 859.82
4. Step 4: Simplify right side
   2,339.69x = 3,017,157.47
5. Step 5: Solve for x
   x = 3,017,157.47/2,339.69
6. Step 6: Final answer
   x = 1,289.56