Finding the Fourth Proportional to 3,907.54, 5,392.18 and 2,228.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,907.54 : 5,392.18 = 2,228.72 : x
2. Step 2: Convert to fraction form
   3,907.54/5,392.18 = 2,228.72/x
3. Step 3: Cross multiply
   3,907.54x = 5,392.18 × 2,228.72
4. Step 4: Simplify right side
   3,907.54x = 12,017,659.41
5. Step 5: Solve for x
   x = 12,017,659.41/3,907.54
6. Step 6: Final answer
   x = 3,075.51