Finding the Fourth Proportional to 2,647,185, 3,970,402.56 and 849,831.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647,185 : 3,970,402.56 = 849,831.78 : x
2. Step 2: Convert to fraction form
   2,647,185/3,970,402.56 = 849,831.78/x
3. Step 3: Cross multiply
   2,647,185x = 3,970,402.56 × 849,831.78
4. Step 4: Simplify right side
   2,647,185x = 3,374,174,274,881.36
5. Step 5: Solve for x
   x = 3,374,174,274,881.36/2,647,185
6. Step 6: Final answer
   x = 1,274,627.30