Finding the Fourth Proportional to 2,365.28, 3,548.72 and 979.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,365.28 : 3,548.72 = 979.28 : x
2. Step 2: Convert to fraction form
   2,365.28/3,548.72 = 979.28/x
3. Step 3: Cross multiply
   2,365.28x = 3,548.72 × 979.28
4. Step 4: Simplify right side
   2,365.28x = 3,475,190.52
5. Step 5: Solve for x
   x = 3,475,190.52/2,365.28
6. Step 6: Final answer
   x = 1,469.25