Finding the Fourth Proportional to 3,555.15, 4,907.89 and 2,229.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,555.15 : 4,907.89 = 2,229.58 : x
2. Step 2: Convert to fraction form
   3,555.15/4,907.89 = 2,229.58/x
3. Step 3: Cross multiply
   3,555.15x = 4,907.89 × 2,229.58
4. Step 4: Simplify right side
   3,555.15x = 10,942,533.39
5. Step 5: Solve for x
   x = 10,942,533.39/3,555.15
6. Step 6: Final answer
   x = 3,077.94