setTimeout() inside a foreach loop

gistfile1.js

$E.__container__.lookup('service:store').findAll('site').then((sites) => {
    sites.forEach((x, index) => {
        setTimeout(() => {
        $E.__container__.lookup('service:gMap')
            .geocode({address: x.get('location')})
            .then((geocodes) => {
                let lat = geocodes[0].geometry.location.lat();
                let lng = geocodes[0].geometry.location.lng();
                console.log(x.get('name'), lat, lng);
                x.set('lat', lat);
                x.set('lng', lng);
                x.save();
            })
            .catch((err) => console.error(err));
        }, 2000*(index+1));
    });
});