Need help to choose right statistical analysis

Dear all,

I have one dependent variable (Y) and 3 independent variables (X1, X2, X3). All dependent and independent variables are continuous.

I want to know which independent variable (X1 or X2 or X3) is a predictor of the dependent variable. If they all are, whether they are independent of each other in predicting the dependent variable.

I am confused which statistical analysis I should use, whether I need to use ANOVA, ANCOVA, multiple regression or logistic regression.

Would be too grateful if any body could help me.