Finding the Fourth Proportional to 2,635.27, 3,951.86 and 1,317.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.27 : 3,951.86 = 1,317.94 : x
2. Step 2: Convert to fraction form
   2,635.27/3,951.86 = 1,317.94/x
3. Step 3: Cross multiply
   2,635.27x = 3,951.86 × 1,317.94
4. Step 4: Simplify right side
   2,635.27x = 5,208,297.90
5. Step 5: Solve for x
   x = 5,208,297.90/2,635.27
6. Step 6: Final answer
   x = 1,976.38