Finding the Fourth Proportional to 1,344.72, 1,855.68 and 755.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.72 : 1,855.68 = 755.22 : x
2. Step 2: Convert to fraction form
   1,344.72/1,855.68 = 755.22/x
3. Step 3: Cross multiply
   1,344.72x = 1,855.68 × 755.22
4. Step 4: Simplify right side
   1,344.72x = 1,401,446.65
5. Step 5: Solve for x
   x = 1,401,446.65/1,344.72
6. Step 6: Final answer
   x = 1,042.18