Finding the Fourth Proportional to 1,285.96, 1,774.56 and 726.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,285.96 : 1,774.56 = 726.38 : x
2. Step 2: Convert to fraction form
   1,285.96/1,774.56 = 726.38/x
3. Step 3: Cross multiply
   1,285.96x = 1,774.56 × 726.38
4. Step 4: Simplify right side
   1,285.96x = 1,289,004.89
5. Step 5: Solve for x
   x = 1,289,004.89/1,285.96
6. Step 6: Final answer
   x = 1,002.37