Finding the Fourth Proportional to 2,286.87, 3,155.55 and 1,292.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,286.87 : 3,155.55 = 1,292.00 : x
2. Step 2: Convert to fraction form
   2,286.87/3,155.55 = 1,292.00/x
3. Step 3: Cross multiply
   2,286.87x = 3,155.55 × 1,292.00
4. Step 4: Simplify right side
   2,286.87x = 4,076,954.82
5. Step 5: Solve for x
   x = 4,076,954.82/2,286.87
6. Step 6: Final answer
   x = 1,782.77