Finding the Fourth Proportional to 1,404.27, 1,938.06 and 814.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.27 : 1,938.06 = 814.68 : x
2. Step 2: Convert to fraction form
   1,404.27/1,938.06 = 814.68/x
3. Step 3: Cross multiply
   1,404.27x = 1,938.06 × 814.68
4. Step 4: Simplify right side
   1,404.27x = 1,578,898.72
5. Step 5: Solve for x
   x = 1,578,898.72/1,404.27
6. Step 6: Final answer
   x = 1,124.36