Finding the Fourth Proportional to 1,412.72, 1,949.64 and 791.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412.72 : 1,949.64 = 791.72 : x
2. Step 2: Convert to fraction form
   1,412.72/1,949.64 = 791.72/x
3. Step 3: Cross multiply
   1,412.72x = 1,949.64 × 791.72
4. Step 4: Simplify right side
   1,412.72x = 1,543,568.98
5. Step 5: Solve for x
   x = 1,543,568.98/1,412.72
6. Step 6: Final answer
   x = 1,092.62