Finding the Fourth Proportional to 2,223.08, 3,067.72 and 1,228.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.08 : 3,067.72 = 1,228.32 : x
2. Step 2: Convert to fraction form
   2,223.08/3,067.72 = 1,228.32/x
3. Step 3: Cross multiply
   2,223.08x = 3,067.72 × 1,228.32
4. Step 4: Simplify right side
   2,223.08x = 3,768,141.83
5. Step 5: Solve for x
   x = 3,768,141.83/2,223.08
6. Step 6: Final answer
   x = 1,695.01