Finding the Fourth Proportional to 1,412.15, 1,948.25 and 791.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.15 : 1,948.25 = 791.15 : x
2. Step 2: Convert to fraction form
   1,412.15/1,948.25 = 791.15/x
3. Step 3: Cross multiply
   1,412.15x = 1,948.25 × 791.15
4. Step 4: Simplify right side
   1,412.15x = 1,541,350.22
5. Step 5: Solve for x
   x = 1,541,350.22/1,412.15
6. Step 6: Final answer
   x = 1,091.50