Finding the Fourth Proportional to 2,606.72, 3,910.46 and 757.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,606.72 : 3,910.46 = 757.85 : x
2. Step 2: Convert to fraction form
   2,606.72/3,910.46 = 757.85/x
3. Step 3: Cross multiply
   2,606.72x = 3,910.46 × 757.85
4. Step 4: Simplify right side
   2,606.72x = 2,963,518.77
5. Step 5: Solve for x
   x = 2,963,518.77/2,606.72
6. Step 6: Final answer
   x = 1,136.88