Finding the Fourth Proportional to 1,131.72, 1,562.73 and 946.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.72 : 1,562.73 = 946.20 : x
2. Step 2: Convert to fraction form
   1,131.72/1,562.73 = 946.20/x
3. Step 3: Cross multiply
   1,131.72x = 1,562.73 × 946.20
4. Step 4: Simplify right side
   1,131.72x = 1,478,655.13
5. Step 5: Solve for x
   x = 1,478,655.13/1,131.72
6. Step 6: Final answer
   x = 1,306.56