Finding the Fourth Proportional to 2,183.83, 3,275.89 and 1,312.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,183.83 : 3,275.89 = 1,312.27 : x
2. Step 2: Convert to fraction form
   2,183.83/3,275.89 = 1,312.27/x
3. Step 3: Cross multiply
   2,183.83x = 3,275.89 × 1,312.27
4. Step 4: Simplify right side
   2,183.83x = 4,298,840.70
5. Step 5: Solve for x
   x = 4,298,840.70/2,183.83
6. Step 6: Final answer
   x = 1,968.49