Finding the Fourth Proportional to 2,286.69, 3,155.69 and 1,291.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,286.69 : 3,155.69 = 1,291.98 : x
2. Step 2: Convert to fraction form
   2,286.69/3,155.69 = 1,291.98/x
3. Step 3: Cross multiply
   2,286.69x = 3,155.69 × 1,291.98
4. Step 4: Simplify right side
   2,286.69x = 4,077,072.59
5. Step 5: Solve for x
   x = 4,077,072.59/2,286.69
6. Step 6: Final answer
   x = 1,782.96