Finding the Fourth Proportional to 2,223.38, 3,068.46 and 1,228.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.38 : 3,068.46 = 1,228.91 : x
2. Step 2: Convert to fraction form
   2,223.38/3,068.46 = 1,228.91/x
3. Step 3: Cross multiply
   2,223.38x = 3,068.46 × 1,228.91
4. Step 4: Simplify right side
   2,223.38x = 3,770,861.18
5. Step 5: Solve for x
   x = 3,770,861.18/2,223.38
6. Step 6: Final answer
   x = 1,696.00