Finding the Fourth Proportional to 2,353.25, 3,530.48 and 814.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,353.25 : 3,530.48 = 814.25 : x
2. Step 2: Convert to fraction form
   2,353.25/3,530.48 = 814.25/x
3. Step 3: Cross multiply
   2,353.25x = 3,530.48 × 814.25
4. Step 4: Simplify right side
   2,353.25x = 2,874,689.27
5. Step 5: Solve for x
   x = 2,874,689.27/2,353.25
6. Step 6: Final answer
   x = 1,221.58