Finding the Fourth Proportional to 912,127.36, 1,258,743.72 and 504,222.72

Step by Step Solution

1. Step 1: Write the proportion equation
   912,127.36 : 1,258,743.72 = 504,222.72 : x
2. Step 2: Convert to fraction form
   912,127.36/1,258,743.72 = 504,222.72/x
3. Step 3: Cross multiply
   912,127.36x = 1,258,743.72 × 504,222.72
4. Step 4: Simplify right side
   912,127.36x = 634,687,182,281.32
5. Step 5: Solve for x
   x = 634,687,182,281.32/912,127.36
6. Step 6: Final answer
   x = 695,831.76