Finding the Fourth Proportional to 2,213.24, 3,053.85 and 1,328.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.24 : 3,053.85 = 1,328.72 : x
2. Step 2: Convert to fraction form
   2,213.24/3,053.85 = 1,328.72/x
3. Step 3: Cross multiply
   2,213.24x = 3,053.85 × 1,328.72
4. Step 4: Simplify right side
   2,213.24x = 4,057,711.57
5. Step 5: Solve for x
   x = 4,057,711.57/2,213.24
6. Step 6: Final answer
   x = 1,833.38