Finding the Fourth Proportional to 844.52, 1,164.83 and 687.15

Step by Step Solution

1. Step 1: Write the proportion equation
   844.52 : 1,164.83 = 687.15 : x
2. Step 2: Convert to fraction form
   844.52/1,164.83 = 687.15/x
3. Step 3: Cross multiply
   844.52x = 1,164.83 × 687.15
4. Step 4: Simplify right side
   844.52x = 800,409.50
5. Step 5: Solve for x
   x = 800,409.50/844.52
6. Step 6: Final answer
   x = 947.77