Finding the Fourth Proportional to 2,021,049.72, 3,028,941.90 and 821,570.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021,049.72 : 3,028,941.90 = 821,570.94 : x
2. Step 2: Convert to fraction form
   2,021,049.72/3,028,941.90 = 821,570.94/x
3. Step 3: Cross multiply
   2,021,049.72x = 3,028,941.90 × 821,570.94
4. Step 4: Simplify right side
   2,021,049.72x = 2,488,490,643,988.39
5. Step 5: Solve for x
   x = 2,488,490,643,988.39/2,021,049.72
6. Step 6: Final answer
   x = 1,231,286.21