Finding the Fourth Proportional to 1,317.27, 1,817.83 and 727.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,317.27 : 1,817.83 = 727.77 : x
2. Step 2: Convert to fraction form
   1,317.27/1,817.83 = 727.77/x
3. Step 3: Cross multiply
   1,317.27x = 1,817.83 × 727.77
4. Step 4: Simplify right side
   1,317.27x = 1,322,965.77
5. Step 5: Solve for x
   x = 1,322,965.77/1,317.27
6. Step 6: Final answer
   x = 1,004.32