Finding the Fourth Proportional to 2,086,971.78, 3,129,954.16 and 871,892.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086,971.78 : 3,129,954.16 = 871,892.02 : x
2. Step 2: Convert to fraction form
   2,086,971.78/3,129,954.16 = 871,892.02/x
3. Step 3: Cross multiply
   2,086,971.78x = 3,129,954.16 × 871,892.02
4. Step 4: Simplify right side
   2,086,971.78x = 2,728,982,067,240.31
5. Step 5: Solve for x
   x = 2,728,982,067,240.31/2,086,971.78
6. Step 6: Final answer
   x = 1,307,627.68