Finding the Fourth Proportional to 2,075.55, 3,111.03 and 842.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.55 : 3,111.03 = 842.60 : x
2. Step 2: Convert to fraction form
   2,075.55/3,111.03 = 842.60/x
3. Step 3: Cross multiply
   2,075.55x = 3,111.03 × 842.60
4. Step 4: Simplify right side
   2,075.55x = 2,621,338.32
5. Step 5: Solve for x
   x = 2,621,338.32/2,075.55
6. Step 6: Final answer
   x = 1,262.96