Finding the Fourth Proportional to 2,353.02, 3,531.15 and 814.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,353.02 : 3,531.15 = 814.02 : x
2. Step 2: Convert to fraction form
   2,353.02/3,531.15 = 814.02/x
3. Step 3: Cross multiply
   2,353.02x = 3,531.15 × 814.02
4. Step 4: Simplify right side
   2,353.02x = 2,874,426.72
5. Step 5: Solve for x
   x = 2,874,426.72/2,353.02
6. Step 6: Final answer
   x = 1,221.59