Finding the Fourth Proportional to 2,201.35, 3,301.86 and 814.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,201.35 : 3,301.86 = 814.43 : x
2. Step 2: Convert to fraction form
   2,201.35/3,301.86 = 814.43/x
3. Step 3: Cross multiply
   2,201.35x = 3,301.86 × 814.43
4. Step 4: Simplify right side
   2,201.35x = 2,689,117.33
5. Step 5: Solve for x
   x = 2,689,117.33/2,201.35
6. Step 6: Final answer
   x = 1,221.58