Finding the Fourth Proportional to 2,183.47, 3,012.72 and 1,299.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,183.47 : 3,012.72 = 1,299.10 : x
2. Step 2: Convert to fraction form
   2,183.47/3,012.72 = 1,299.10/x
3. Step 3: Cross multiply
   2,183.47x = 3,012.72 × 1,299.10
4. Step 4: Simplify right side
   2,183.47x = 3,913,824.55
5. Step 5: Solve for x
   x = 3,913,824.55/2,183.47
6. Step 6: Final answer
   x = 1,792.48