Finding the Fourth Proportional to 2,217.06, 3,058.56 and 1,553.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.06 : 3,058.56 = 1,553.67 : x
2. Step 2: Convert to fraction form
   2,217.06/3,058.56 = 1,553.67/x
3. Step 3: Cross multiply
   2,217.06x = 3,058.56 × 1,553.67
4. Step 4: Simplify right side
   2,217.06x = 4,751,992.92
5. Step 5: Solve for x
   x = 4,751,992.92/2,217.06
6. Step 6: Final answer
   x = 2,143.38