Extract Certain Values From Text String

Question

I am trying to extract/isolate certain values in a string:

String

1:0:lon=288.987370,lat=42.353930,i=2035360,ix=1900,iy=949,val=36.2434

Say, for instance, I want to extract the value of ix, which is 1900.

I am guessing this can be accomplished through awk or sed.

Attempted Code

echo "1:0:lon=288.987370,lat=42.353930,i=2035360,ix=1900,iy=949,val=36.2434" | awk -F'=' '{print $4}' | awk -F',' '{print $1}'