Finding the Fourth Proportional to 6,858.82, 10,288.15 and 1,664.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,858.82 : 10,288.15 = 1,664.69 : x
2. Step 2: Convert to fraction form
   6,858.82/10,288.15 = 1,664.69/x
3. Step 3: Cross multiply
   6,858.82x = 10,288.15 × 1,664.69
4. Step 4: Simplify right side
   6,858.82x = 17,126,576.26
5. Step 5: Solve for x
   x = 17,126,576.26/6,858.82
6. Step 6: Final answer
   x = 2,497.02