Newtons Divided difference algorithm help?

You are given the following data:

f(0) = 0.961, f(0.25) = 1.67843, f(0.5) = 2.71417, f(0.75) = 4.52192.

a. Use Newton's Divided Difference algorithm to create a table of coefficients for the cubic interpolatory polynomial. The coefficients are f[x0,x1] = f[x1,x2] = f[x2,x3] = f[x0,x1,x2] = f[x1,x2,x3] = f[x0,x1,x2,x3] = Not sure how to go about this, I don't know why but I have tried looking up examples I just cant grasp how to go about this through matlab. I am fairly new to it by the way only have about 6 weeks of experience with matlab and through those 6 weeks its about only 3 days a week. Thank you