Finding the Fourth Proportional to 911,018.22, 1,257,183.63 and 503,111.94

Step by Step Solution

1. Step 1: Write the proportion equation
   911,018.22 : 1,257,183.63 = 503,111.94 : x
2. Step 2: Convert to fraction form
   911,018.22/1,257,183.63 = 503,111.94/x
3. Step 3: Cross multiply
   911,018.22x = 1,257,183.63 × 503,111.94
4. Step 4: Simplify right side
   911,018.22x = 632,504,095,025.54
5. Step 5: Solve for x
   x = 632,504,095,025.54/911,018.22
6. Step 6: Final answer
   x = 694,282.60