Breakeven Sales Revenue

Could someone please help me with the following question??!!

EC ltd produces and sells the following two products throughout the year in a constant mix.

Product X Product Y
Variable Costs $0.45 $0.60
Fixed Costs $1212000 per period

The management of EC has stated that total sales revenue will reach a maximum of $4000000 and is generated by the two products in the following proportions:

Product X Product Y
Variable cost per $ of Sales 70% 30%

the question is : Calculate the breakeven sales revenue required per period, based on the sales mix assumed above

i really cannot understand how to find out the contribution from here??? and i dnt get the sales mix they are talking about?? what does it mean??!! So could someone pls solve this…???!!