Finding the Fourth Proportional to 6,859.82, 10,289.65 and 1,665.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,859.82 : 10,289.65 = 1,665.69 : x
2. Step 2: Convert to fraction form
   6,859.82/10,289.65 = 1,665.69/x
3. Step 3: Cross multiply
   6,859.82x = 10,289.65 × 1,665.69
4. Step 4: Simplify right side
   6,859.82x = 17,139,367.11
5. Step 5: Solve for x
   x = 17,139,367.11/6,859.82
6. Step 6: Final answer
   x = 2,498.52