Finding the Fourth Proportional to 1,404.29, 1,938.31 and 814.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.29 : 1,938.31 = 814.71 : x
2. Step 2: Convert to fraction form
   1,404.29/1,938.31 = 814.71/x
3. Step 3: Cross multiply
   1,404.29x = 1,938.31 × 814.71
4. Step 4: Simplify right side
   1,404.29x = 1,579,158.50
5. Step 5: Solve for x
   x = 1,579,158.50/1,404.29
6. Step 6: Final answer
   x = 1,124.52