Finding the Fourth Proportional to 2,223.21, 3,068.25 and 1,228.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.21 : 3,068.25 = 1,228.56 : x
2. Step 2: Convert to fraction form
   2,223.21/3,068.25 = 1,228.56/x
3. Step 3: Cross multiply
   2,223.21x = 3,068.25 × 1,228.56
4. Step 4: Simplify right side
   2,223.21x = 3,769,523.08
5. Step 5: Solve for x
   x = 3,769,523.08/2,223.21
6. Step 6: Final answer
   x = 1,695.53