Finding the Fourth Proportional to 1,404.47, 1,938.51 and 814.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.47 : 1,938.51 = 814.92 : x
2. Step 2: Convert to fraction form
   1,404.47/1,938.51 = 814.92/x
3. Step 3: Cross multiply
   1,404.47x = 1,938.51 × 814.92
4. Step 4: Simplify right side
   1,404.47x = 1,579,730.57
5. Step 5: Solve for x
   x = 1,579,730.57/1,404.47
6. Step 6: Final answer
   x = 1,124.79