Finding the Fourth Proportional to 2,101,360.09, 3,151,843.15 and 681,428.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101,360.09 : 3,151,843.15 = 681,428.47 : x
2. Step 2: Convert to fraction form
   2,101,360.09/3,151,843.15 = 681,428.47/x
3. Step 3: Cross multiply
   2,101,360.09x = 3,151,843.15 × 681,428.47
4. Step 4: Simplify right side
   2,101,360.09x = 2,147,755,655,384.48
5. Step 5: Solve for x
   x = 2,147,755,655,384.48/2,101,360.09
6. Step 6: Final answer
   x = 1,022,078.83