Finding the Fourth Proportional to 1,062.88, 1,593.82 and 404.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,062.88 : 1,593.82 = 404.78 : x
2. Step 2: Convert to fraction form
   1,062.88/1,593.82 = 404.78/x
3. Step 3: Cross multiply
   1,062.88x = 1,593.82 × 404.78
4. Step 4: Simplify right side
   1,062.88x = 645,146.46
5. Step 5: Solve for x
   x = 645,146.46/1,062.88
6. Step 6: Final answer
   x = 606.98