Please be aware that swaps for SOYBEAN are stated in terms of percentages as shown under swap type in the image that you shared. This means that the swap rate will be 56.1% of the live price on a pro rata basis for a buy trade and -63.48% for a sell trade.
Therefore, the calculation for swap fees based on your buy trade would be:
1534.03 * 0.561 / 360 = 2.40