Finding the Fourth Proportional to 1,581.17, 2,369.72 and 757.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,581.17 : 2,369.72 = 757.73 : x
2. Step 2: Convert to fraction form
   1,581.17/2,369.72 = 757.73/x
3. Step 3: Cross multiply
   1,581.17x = 2,369.72 × 757.73
4. Step 4: Simplify right side
   1,581.17x = 1,795,604.15
5. Step 5: Solve for x
   x = 1,795,604.15/1,581.17
6. Step 6: Final answer
   x = 1,135.62