Finding the Fourth Proportional to 846.72, 1,168.56 and 767.88

Step by Step Solution

1. Step 1: Write the proportion equation
   846.72 : 1,168.56 = 767.88 : x
2. Step 2: Convert to fraction form
   846.72/1,168.56 = 767.88/x
3. Step 3: Cross multiply
   846.72x = 1,168.56 × 767.88
4. Step 4: Simplify right side
   846.72x = 897,313.85
5. Step 5: Solve for x
   x = 897,313.85/846.72
6. Step 6: Final answer
   x = 1,059.75