Finding the Fourth Proportional to 2,075.10, 3,113.72 and 843.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.10 : 3,113.72 = 843.42 : x
2. Step 2: Convert to fraction form
   2,075.10/3,113.72 = 843.42/x
3. Step 3: Cross multiply
   2,075.10x = 3,113.72 × 843.42
4. Step 4: Simplify right side
   2,075.10x = 2,626,160.26
5. Step 5: Solve for x
   x = 2,626,160.26/2,075.10
6. Step 6: Final answer
   x = 1,265.56