Finding the Fourth Proportional to 1,344.61, 1,855.61 and 755.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.61 : 1,855.61 = 755.16 : x
2. Step 2: Convert to fraction form
   1,344.61/1,855.61 = 755.16/x
3. Step 3: Cross multiply
   1,344.61x = 1,855.61 × 755.16
4. Step 4: Simplify right side
   1,344.61x = 1,401,282.45
5. Step 5: Solve for x
   x = 1,401,282.45/1,344.61
6. Step 6: Final answer
   x = 1,042.15