Finding the Fourth Proportional to 1,269,320, 1,751,816.56 and 725,478.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,269,320 : 1,751,816.56 = 725,478.72 : x
2. Step 2: Convert to fraction form
   1,269,320/1,751,816.56 = 725,478.72/x
3. Step 3: Cross multiply
   1,269,320x = 1,751,816.56 × 725,478.72
4. Step 4: Simplify right side
   1,269,320x = 1,270,905,635,623.60
5. Step 5: Solve for x
   x = 1,270,905,635,623.60/1,269,320
6. Step 6: Final answer
   x = 1,001,249.20