Finding the Fourth Proportional to 2,214.30, 3,320.50 and 752.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,214.30 : 3,320.50 = 752.79 : x
2. Step 2: Convert to fraction form
   2,214.30/3,320.50 = 752.79/x
3. Step 3: Cross multiply
   2,214.30x = 3,320.50 × 752.79
4. Step 4: Simplify right side
   2,214.30x = 2,499,639.20
5. Step 5: Solve for x
   x = 2,499,639.20/2,214.30
6. Step 6: Final answer
   x = 1,128.86