I'd like to have a possible solution for having this figure in my paper. I want the whole figure to be shaped like this :
| | |Figure 2|
| Figure 1 | |Figure 3|
| | |figure 4|
I already found a first solution in how to put subfigures in several rows but the package tabularx doesn't seem to be working with the template furnished and named ws-procs9x6 that you can find there.
I'm using the subfig package.