Finding the Fourth Proportional to 911,911.25, 1,258,502.69 and 504,004.31

Step by Step Solution

1. Step 1: Write the proportion equation
   911,911.25 : 1,258,502.69 = 504,004.31 : x
2. Step 2: Convert to fraction form
   911,911.25/1,258,502.69 = 504,004.31/x
3. Step 3: Cross multiply
   911,911.25x = 1,258,502.69 × 504,004.31
4. Step 4: Simplify right side
   911,911.25x = 634,290,782,892.52
5. Step 5: Solve for x
   x = 634,290,782,892.52/911,911.25
6. Step 6: Final answer
   x = 695,561.97