Finding the Fourth Proportional to 500,831.82, 691,071.47 and 282,961

Step by Step Solution

1. Step 1: Write the proportion equation
   500,831.82 : 691,071.47 = 282,961 : x
2. Step 2: Convert to fraction form
   500,831.82/691,071.47 = 282,961/x
3. Step 3: Cross multiply
   500,831.82x = 691,071.47 × 282,961
4. Step 4: Simplify right side
   500,831.82x = 195,546,274,222.67
5. Step 5: Solve for x
   x = 195,546,274,222.67/500,831.82
6. Step 6: Final answer
   x = 390,442.99