Finding the Fourth Proportional to 2,286.77, 3,155.78 and 1,292.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,286.77 : 3,155.78 = 1,292.09 : x
2. Step 2: Convert to fraction form
   2,286.77/3,155.78 = 1,292.09/x
3. Step 3: Cross multiply
   2,286.77x = 3,155.78 × 1,292.09
4. Step 4: Simplify right side
   2,286.77x = 4,077,562.90
5. Step 5: Solve for x
   x = 4,077,562.90/2,286.77
6. Step 6: Final answer
   x = 1,783.11