Finding the Fourth Proportional to 2,075.24, 3,113.72 and 842.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.24 : 3,113.72 = 842.34 : x
2. Step 2: Convert to fraction form
   2,075.24/3,113.72 = 842.34/x
3. Step 3: Cross multiply
   2,075.24x = 3,113.72 × 842.34
4. Step 4: Simplify right side
   2,075.24x = 2,622,810.90
5. Step 5: Solve for x
   x = 2,622,810.90/2,075.24
6. Step 6: Final answer
   x = 1,263.86