The Singapore Pool 4-D draw on 17th Sept 2014 as follow: First Prize: 2479.
Plotting the Qi Men Dun Jia chart for 17th Sept 2014:
For 4-D, the Yong Shen (Useful God) is 景门 (Jǐng Mén) at Dui 7 Palace. In this palace, the numbers are: 2,7,4,9. These matches the First Prize (2479) of 4-D draw that day.
So, why the First Prize is 2479 and not other permutation? That's where you need your gambling luck!