Finding the Fourth Proportional to 2,286.89, 3,155.87 and 1,292.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,286.89 : 3,155.87 = 1,292.49 : x
2. Step 2: Convert to fraction form
   2,286.89/3,155.87 = 1,292.49/x
3. Step 3: Cross multiply
   2,286.89x = 3,155.87 × 1,292.49
4. Step 4: Simplify right side
   2,286.89x = 4,078,930.42
5. Step 5: Solve for x
   x = 4,078,930.42/2,286.89
6. Step 6: Final answer
   x = 1,783.61