Finding the Fourth Proportional to 2,159,790.72, 3,239,095.59 and 811,849.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159,790.72 : 3,239,095.59 = 811,849.67 : x
2. Step 2: Convert to fraction form
   2,159,790.72/3,239,095.59 = 811,849.67/x
3. Step 3: Cross multiply
   2,159,790.72x = 3,239,095.59 × 811,849.67
4. Step 4: Simplify right side
   2,159,790.72x = 2,629,658,700,011.00
5. Step 5: Solve for x
   x = 2,629,658,700,011.00/2,159,790.72
6. Step 6: Final answer
   x = 1,217,552.55