There are three resistors in series: 1st 330 ohm, 2nd 100 ohm, and 3rd 1,000 ohm.
The first two resistors add to 430 ohm (the reading: 428 ohm, 0.5% difference).
The second and the third one add to 1100 ohm (the reading: 1097 ohm, 0.3% difference).
All three resistors add to 1430 ohm (the reading: 1424 ohm, 0.4% difference).
