Given data:

The number of conductors in line is four.

The weight of each conductor (w) is 2526 lb1000 ft.

The length of line (l) is 845 miles.

Formula used:

Write a general expression that shows the relation between ‘mile and ft’, and ‘kg and lb’.

1 mile=5280 ft

1 kg=2.2 lb

Calculation:

The weight of conductor is calculated as follows,

 Weight of conductor(W)=wl (1)

Substitute 2526 lb1000 ft for w, and 845 miles for l in equation (1) to find W.

 Weight of conductor(W)=(2526 lb1000 ft)(845 miles) (2)

Using product of ratios, convert the unit of equation (2) from lbft⋅miles to kg to find W.

W=(845 miles)(2526 lb1000 ft)⋅(5280 ft1 mile)⋅(1 kg2.2 lb)=5122728 kg

The total weight of four conductors can be calculated as follows,

WT=4W (3)

Substitute 5122728 kg for W in equation (3) to find WT.

WT=4(5122728 kg)=20.5×106 kg

Conclusion:

Thus, the number of kilograms of conductors in the line is 20.5×106 kg.