Finding the Fourth Proportional to 1,800.78, 2,695.47 and 1,183.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,800.78 : 2,695.47 = 1,183.02 : x
2. Step 2: Convert to fraction form
   1,800.78/2,695.47 = 1,183.02/x
3. Step 3: Cross multiply
   1,800.78x = 2,695.47 × 1,183.02
4. Step 4: Simplify right side
   1,800.78x = 3,188,794.92
5. Step 5: Solve for x
   x = 3,188,794.92/1,800.78
6. Step 6: Final answer
   x = 1,770.79