Finding the Fourth Proportional to 1,183.86, 1,772.69 and 835.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,183.86 : 1,772.69 = 835.31 : x
2. Step 2: Convert to fraction form
   1,183.86/1,772.69 = 835.31/x
3. Step 3: Cross multiply
   1,183.86x = 1,772.69 × 835.31
4. Step 4: Simplify right side
   1,183.86x = 1,480,745.94
5. Step 5: Solve for x
   x = 1,480,745.94/1,183.86
6. Step 6: Final answer
   x = 1,250.78