Finding the Fourth Proportional to 3,617.12, 5,424.72 and 1,308.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,617.12 : 5,424.72 = 1,308.56 : x
2. Step 2: Convert to fraction form
   3,617.12/5,424.72 = 1,308.56/x
3. Step 3: Cross multiply
   3,617.12x = 5,424.72 × 1,308.56
4. Step 4: Simplify right side
   3,617.12x = 7,098,571.60
5. Step 5: Solve for x
   x = 7,098,571.60/3,617.12
6. Step 6: Final answer
   x = 1,962.49