Finding the Fourth Proportional to 3,815.86, 5,724.72 and 1,183.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,815.86 : 5,724.72 = 1,183.30 : x
2. Step 2: Convert to fraction form
   3,815.86/5,724.72 = 1,183.30/x
3. Step 3: Cross multiply
   3,815.86x = 5,724.72 × 1,183.30
4. Step 4: Simplify right side
   3,815.86x = 6,774,061.18
5. Step 5: Solve for x
   x = 6,774,061.18/3,815.86
6. Step 6: Final answer
   x = 1,775.24