Finding the Fourth Proportional to 1,494.35, 2,062.25 and 831.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,494.35 : 2,062.25 = 831.21 : x
2. Step 2: Convert to fraction form
   1,494.35/2,062.25 = 831.21/x
3. Step 3: Cross multiply
   1,494.35x = 2,062.25 × 831.21
4. Step 4: Simplify right side
   1,494.35x = 1,714,162.82
5. Step 5: Solve for x
   x = 1,714,162.82/1,494.35
6. Step 6: Final answer
   x = 1,147.10