Finding the Fourth Proportional to 2,212.57, 3,053.28 and 1,328.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,212.57 : 3,053.28 = 1,328.32 : x
2. Step 2: Convert to fraction form
   2,212.57/3,053.28 = 1,328.32/x
3. Step 3: Cross multiply
   2,212.57x = 3,053.28 × 1,328.32
4. Step 4: Simplify right side
   2,212.57x = 4,055,732.89
5. Step 5: Solve for x
   x = 4,055,732.89/2,212.57
6. Step 6: Final answer
   x = 1,833.04