Finding the Fourth Proportional to 2,213.10, 3,052.83 and 1,328.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.10 : 3,052.83 = 1,328.40 : x
2. Step 2: Convert to fraction form
   2,213.10/3,052.83 = 1,328.40/x
3. Step 3: Cross multiply
   2,213.10x = 3,052.83 × 1,328.40
4. Step 4: Simplify right side
   2,213.10x = 4,055,379.37
5. Step 5: Solve for x
   x = 4,055,379.37/2,213.10
6. Step 6: Final answer
   x = 1,832.44