Finding the Fourth Proportional to 1,263.86, 1,743.56 and 791.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,263.86 : 1,743.56 = 791.56 : x
2. Step 2: Convert to fraction form
   1,263.86/1,743.56 = 791.56/x
3. Step 3: Cross multiply
   1,263.86x = 1,743.56 × 791.56
4. Step 4: Simplify right side
   1,263.86x = 1,380,132.35
5. Step 5: Solve for x
   x = 1,380,132.35/1,263.86
6. Step 6: Final answer
   x = 1,092.00