Answer:
$1,247,500
Step-by-step explanation:
The computation of the balance in the Investment in Booker account is shown below:
= The Purchasing cost of common stock + ownership amount - cash dividend paid
where, 
Purchasing cost of the common stock is $1,200,000
Ownership amount = Net income × ownership percentage
 = $700,000 × 0.25
 = $175,000
And, the dividend amount = Number of shares × dividend per share
 = 150,000 shares × $0.85 per share
 = 127,500
Now put these values to the above formula 
So, the answer would be equal to 
= $1,200,000 + $175,000 - $127,500
= $1,247,500