Finding the Fourth Proportional to 1,356.03, 1,871.25 and 831.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.03 : 1,871.25 = 831.96 : x
2. Step 2: Convert to fraction form
   1,356.03/1,871.25 = 831.96/x
3. Step 3: Cross multiply
   1,356.03x = 1,871.25 × 831.96
4. Step 4: Simplify right side
   1,356.03x = 1,556,805.15
5. Step 5: Solve for x
   x = 1,556,805.15/1,356.03
6. Step 6: Final answer
   x = 1,148.06