Finding the Fourth Proportional to 3,443.77, 5,156.88 and 2,270.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,443.77 : 5,156.88 = 2,270.21 : x
2. Step 2: Convert to fraction form
   3,443.77/5,156.88 = 2,270.21/x
3. Step 3: Cross multiply
   3,443.77x = 5,156.88 × 2,270.21
4. Step 4: Simplify right side
   3,443.77x = 11,707,200.54
5. Step 5: Solve for x
   x = 11,707,200.54/3,443.77
6. Step 6: Final answer
   x = 3,399.53