Finding the Fourth Proportional to 2,283.86, 3,151.70 and 1,289.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,283.86 : 3,151.70 = 1,289.10 : x
2. Step 2: Convert to fraction form
   2,283.86/3,151.70 = 1,289.10/x
3. Step 3: Cross multiply
   2,283.86x = 3,151.70 × 1,289.10
4. Step 4: Simplify right side
   2,283.86x = 4,062,856.47
5. Step 5: Solve for x
   x = 4,062,856.47/2,283.86
6. Step 6: Final answer
   x = 1,778.94