Finding the Fourth Proportional to 2,223.21, 3,068.10 and 1,228.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.21 : 3,068.10 = 1,228.52 : x
2. Step 2: Convert to fraction form
   2,223.21/3,068.10 = 1,228.52/x
3. Step 3: Cross multiply
   2,223.21x = 3,068.10 × 1,228.52
4. Step 4: Simplify right side
   2,223.21x = 3,769,222.21
5. Step 5: Solve for x
   x = 3,769,222.21/2,223.21
6. Step 6: Final answer
   x = 1,695.40