Finding the Fourth Proportional to 1,262.72, 1,743.39 and 791.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,262.72 : 1,743.39 = 791.30 : x
2. Step 2: Convert to fraction form
   1,262.72/1,743.39 = 791.30/x
3. Step 3: Cross multiply
   1,262.72x = 1,743.39 × 791.30
4. Step 4: Simplify right side
   1,262.72x = 1,379,548.87
5. Step 5: Solve for x
   x = 1,379,548.87/1,262.72
6. Step 6: Final answer
   x = 1,092.52