Finding the Fourth Proportional to 1,185,408.25, 1,635,889.31 and 648,864.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185,408.25 : 1,635,889.31 = 648,864.25 : x
2. Step 2: Convert to fraction form
   1,185,408.25/1,635,889.31 = 648,864.25/x
3. Step 3: Cross multiply
   1,185,408.25x = 1,635,889.31 × 648,864.25
4. Step 4: Simplify right side
   1,185,408.25x = 1,061,470,086,971.85
5. Step 5: Solve for x
   x = 1,061,470,086,971.85/1,185,408.25
6. Step 6: Final answer
   x = 895,446.85