how to add numbers in array with before element javascript [closed]

i just want to know how to do this :

var payChecks = [-55.47,-22.62,-414.1,-315.57]; 

i want : [-55.47,(-55.47) + (-22.62),(-55.47) + (-22.62)+ (-414.1),(-55.47) + (-22.62)+ (-414.1) + (-315.57)]

so : [-55.47,-77.98,-492.08,-807.65]

thx