Finding the Fourth Proportional to 2,206.56, 3,308.22 and 1,053.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,206.56 : 3,308.22 = 1,053.12 : x
2. Step 2: Convert to fraction form
   2,206.56/3,308.22 = 1,053.12/x
3. Step 3: Cross multiply
   2,206.56x = 3,308.22 × 1,053.12
4. Step 4: Simplify right side
   2,206.56x = 3,483,952.65
5. Step 5: Solve for x
   x = 3,483,952.65/2,206.56
6. Step 6: Final answer
   x = 1,578.91