Finding the Fourth Proportional to 3,906.33, 5,858.27 and 1,308.66

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.33 : 5,858.27 = 1,308.66 : x
2. Step 2: Convert to fraction form
   3,906.33/5,858.27 = 1,308.66/x
3. Step 3: Cross multiply
   3,906.33x = 5,858.27 × 1,308.66
4. Step 4: Simplify right side
   3,906.33x = 7,666,467.38
5. Step 5: Solve for x
   x = 7,666,467.38/3,906.33
6. Step 6: Final answer
   x = 1,962.58