Finding the Fourth Proportional to 1,160.72, 1,601.22 and 768.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160.72 : 1,601.22 = 768.07 : x
2. Step 2: Convert to fraction form
   1,160.72/1,601.22 = 768.07/x
3. Step 3: Cross multiply
   1,160.72x = 1,601.22 × 768.07
4. Step 4: Simplify right side
   1,160.72x = 1,229,847.92
5. Step 5: Solve for x
   x = 1,229,847.92/1,160.72
6. Step 6: Final answer
   x = 1,059.56