Finding the Fourth Proportional to 2,086,970.94, 3,129,952.89 and 871,891.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086,970.94 : 3,129,952.89 = 871,891.18 : x
2. Step 2: Convert to fraction form
   2,086,970.94/3,129,952.89 = 871,891.18/x
3. Step 3: Cross multiply
   2,086,970.94x = 3,129,952.89 × 871,891.18
4. Step 4: Simplify right side
   2,086,970.94x = 2,728,978,322,854.21
5. Step 5: Solve for x
   x = 2,728,978,322,854.21/2,086,970.94
6. Step 6: Final answer
   x = 1,307,626.41