Post Wrapping out of position

So after an exhaustive search I’m yet to solve my problem. What I’ve stubbled across is a rather frustrating floating issue, where by every third post is moving to the right.

I’ve seen some samples where by I can count up the posts and issue a <div style=”clear:both”></div> on every third post. Are there any samples on how best to do this and where to apply the code?

if ( have_posts() ) : while( have_posts() ) : the_post(); $count++;
    //Loop code goes here. Blah Blah.
    //Your code from above goes next
    if ( 0 == $count%3 ) {
        echo 'div class="clear"></div>';
    }
endwhile; //ending the loop
if ( 0 != $count%3 ) {
   echo 'div class="clear"></div>';
}

This is what I’m looking at, I’ve tried applying this to the ‘posts_loo_template.php’ with little success.

https://wordpress.org/plugins/posts-in-page/