Finding the Fourth Proportional to 2,401.47, 3,601.80 and 757.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,401.47 : 3,601.80 = 757.78 : x
2. Step 2: Convert to fraction form
   2,401.47/3,601.80 = 757.78/x
3. Step 3: Cross multiply
   2,401.47x = 3,601.80 × 757.78
4. Step 4: Simplify right side
   2,401.47x = 2,729,379.35
5. Step 5: Solve for x
   x = 2,729,379.35/2,401.47
6. Step 6: Final answer
   x = 1,136.54