Answer:
The cash flow mark to market proceeds = $754.45
Explanation:
The current index value after 12 months = current stock index * (1 + risk free - dividend yield)^12
= 1800 * (1 + 0.50% - 0.20%)^12
The current index value after 12 months = 1865.88
The future index value after 12 months = future stock index * (1 + risk free - dividend yield)^12
= 1820 * (1 + 0.50% - 0.20%)^11
The future index value after 12 months= 1880.97
The cash flow mark to market proceeds = (future index future value - current index future value) * multiplier
= (1880.97 - 1865.88) * 50
The cash flow mark to market proceeds = $754.45