Finding the Fourth Proportional to 1,404.22, 1,938.14 and 814.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.22 : 1,938.14 = 814.85 : x
2. Step 2: Convert to fraction form
   1,404.22/1,938.14 = 814.85/x
3. Step 3: Cross multiply
   1,404.22x = 1,938.14 × 814.85
4. Step 4: Simplify right side
   1,404.22x = 1,579,293.38
5. Step 5: Solve for x
   x = 1,579,293.38/1,404.22
6. Step 6: Final answer
   x = 1,124.68