You posted this in the Lounge, which is not product specific, not for technical questions. Can you specify which Adobe application you want to use: Lightroom or Photoshop, and I'll move your question to that forum.
[details removed by ussnorway]
moved to lightroom forum
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Use the Crop tool to change the aspect ratio to that the image to match those figures. 1300 x 544 = 3/1.2553 ratio. Then export it with the long edge matching the 1300 figure.