Finding the Fourth Proportional to 2,721,997.53, 4,083,588.78 and 828,689.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,721,997.53 : 4,083,588.78 = 828,689.76 : x
2. Step 2: Convert to fraction form
   2,721,997.53/4,083,588.78 = 828,689.76/x
3. Step 3: Cross multiply
   2,721,997.53x = 4,083,588.78 × 828,689.76
4. Step 4: Simplify right side
   2,721,997.53x = 3,384,028,206,036.89
5. Step 5: Solve for x
   x = 3,384,028,206,036.89/2,721,997.53
6. Step 6: Final answer
   x = 1,243,215.02