Finding the Fourth Proportional to 2,213.92, 3,320.82 and 753.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.92 : 3,320.82 = 753.10 : x
2. Step 2: Convert to fraction form
   2,213.92/3,320.82 = 753.10/x
3. Step 3: Cross multiply
   2,213.92x = 3,320.82 × 753.10
4. Step 4: Simplify right side
   2,213.92x = 2,500,909.54
5. Step 5: Solve for x
   x = 2,500,909.54/2,213.92
6. Step 6: Final answer
   x = 1,129.63