Finding the Fourth Proportional to 2,223.05, 3,314.41 and 2,165.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.05 : 3,314.41 = 2,165.35 : x
2. Step 2: Convert to fraction form
   2,223.05/3,314.41 = 2,165.35/x
3. Step 3: Cross multiply
   2,223.05x = 3,314.41 × 2,165.35
4. Step 4: Simplify right side
   2,223.05x = 7,176,841.12
5. Step 5: Solve for x
   x = 7,176,841.12/2,223.05
6. Step 6: Final answer
   x = 3,228.38