Finding the Fourth Proportional to 3,805.72, 5,708.74 and 1,308.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,805.72 : 5,708.74 = 1,308.62 : x
2. Step 2: Convert to fraction form
   3,805.72/5,708.74 = 1,308.62/x
3. Step 3: Cross multiply
   3,805.72x = 5,708.74 × 1,308.62
4. Step 4: Simplify right side
   3,805.72x = 7,470,571.34
5. Step 5: Solve for x
   x = 7,470,571.34/3,805.72
6. Step 6: Final answer
   x = 1,962.99