Finding the Fourth Proportional to 2,183.59, 3,013.28 and 1,188.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,183.59 : 3,013.28 = 1,188.86 : x
2. Step 2: Convert to fraction form
   2,183.59/3,013.28 = 1,188.86/x
3. Step 3: Cross multiply
   2,183.59x = 3,013.28 × 1,188.86
4. Step 4: Simplify right side
   2,183.59x = 3,582,367.27
5. Step 5: Solve for x
   x = 3,582,367.27/2,183.59
6. Step 6: Final answer
   x = 1,640.59