Finding the Fourth Proportional to 2,288.73, 3,159.78 and 1,591.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.73 : 3,159.78 = 1,591.05 : x
2. Step 2: Convert to fraction form
   2,288.73/3,159.78 = 1,591.05/x
3. Step 3: Cross multiply
   2,288.73x = 3,159.78 × 1,591.05
4. Step 4: Simplify right side
   2,288.73x = 5,027,367.97
5. Step 5: Solve for x
   x = 5,027,367.97/2,288.73
6. Step 6: Final answer
   x = 2,196.58