Finding the Fourth Proportional to 1,162.95, 1,605.90 and 791.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,162.95 : 1,605.90 = 791.31 : x
2. Step 2: Convert to fraction form
   1,162.95/1,605.90 = 791.31/x
3. Step 3: Cross multiply
   1,162.95x = 1,605.90 × 791.31
4. Step 4: Simplify right side
   1,162.95x = 1,270,764.73
5. Step 5: Solve for x
   x = 1,270,764.73/1,162.95
6. Step 6: Final answer
   x = 1,092.71