Finding the Fourth Proportional to 1,344.57, 1,855.61 and 755.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.57 : 1,855.61 = 755.09 : x
2. Step 2: Convert to fraction form
   1,344.57/1,855.61 = 755.09/x
3. Step 3: Cross multiply
   1,344.57x = 1,855.61 × 755.09
4. Step 4: Simplify right side
   1,344.57x = 1,401,139.50
5. Step 5: Solve for x
   x = 1,401,139.50/1,344.57
6. Step 6: Final answer
   x = 1,042.07