Finding the Fourth Proportional to 2,231,021.58, 3,078,829.35 and 1,212,426.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231,021.58 : 3,078,829.35 = 1,212,426.30 : x
2. Step 2: Convert to fraction form
   2,231,021.58/3,078,829.35 = 1,212,426.30/x
3. Step 3: Cross multiply
   2,231,021.58x = 3,078,829.35 × 1,212,426.30
4. Step 4: Simplify right side
   2,231,021.58x = 3,732,853,677,151.91
5. Step 5: Solve for x
   x = 3,732,853,677,151.91/2,231,021.58
6. Step 6: Final answer
   x = 1,673,158.93