Finding the Fourth Proportional to 1,344.76, 1,855.90 and 755.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.76 : 1,855.90 = 755.40 : x
2. Step 2: Convert to fraction form
   1,344.76/1,855.90 = 755.40/x
3. Step 3: Cross multiply
   1,344.76x = 1,855.90 × 755.40
4. Step 4: Simplify right side
   1,344.76x = 1,401,946.86
5. Step 5: Solve for x
   x = 1,401,946.86/1,344.76
6. Step 6: Final answer
   x = 1,042.53