Finding the Fourth Proportional to 1,040.36, 1,436.15 and 791.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040.36 : 1,436.15 = 791.69 : x
2. Step 2: Convert to fraction form
   1,040.36/1,436.15 = 791.69/x
3. Step 3: Cross multiply
   1,040.36x = 1,436.15 × 791.69
4. Step 4: Simplify right side
   1,040.36x = 1,136,980.39
5. Step 5: Solve for x
   x = 1,136,980.39/1,040.36
6. Step 6: Final answer
   x = 1,092.88