Finding the Fourth Proportional to 2,223.38, 3,068.22 and 1,228.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.38 : 3,068.22 = 1,228.64 : x
2. Step 2: Convert to fraction form
   2,223.38/3,068.22 = 1,228.64/x
3. Step 3: Cross multiply
   2,223.38x = 3,068.22 × 1,228.64
4. Step 4: Simplify right side
   2,223.38x = 3,769,737.82
5. Step 5: Solve for x
   x = 3,769,737.82/2,223.38
6. Step 6: Final answer
   x = 1,695.50