Finding the Fourth Proportional to 1,404.45, 1,938.33 and 814.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.45 : 1,938.33 = 814.95 : x
2. Step 2: Convert to fraction form
   1,404.45/1,938.33 = 814.95/x
3. Step 3: Cross multiply
   1,404.45x = 1,938.33 × 814.95
4. Step 4: Simplify right side
   1,404.45x = 1,579,642.03
5. Step 5: Solve for x
   x = 1,579,642.03/1,404.45
6. Step 6: Final answer
   x = 1,124.74