Finding the Fourth Proportional to 843.27, 1,162.83 and 776.31

Step by Step Solution

1. Step 1: Write the proportion equation
   843.27 : 1,162.83 = 776.31 : x
2. Step 2: Convert to fraction form
   843.27/1,162.83 = 776.31/x
3. Step 3: Cross multiply
   843.27x = 1,162.83 × 776.31
4. Step 4: Simplify right side
   843.27x = 902,716.56
5. Step 5: Solve for x
   x = 902,716.56/843.27
6. Step 6: Final answer
   x = 1,070.50