Finding the Fourth Proportional to 2,545.98, 3,819.02 and 814.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.98 : 3,819.02 = 814.61 : x
2. Step 2: Convert to fraction form
   2,545.98/3,819.02 = 814.61/x
3. Step 3: Cross multiply
   2,545.98x = 3,819.02 × 814.61
4. Step 4: Simplify right side
   2,545.98x = 3,110,988.71
5. Step 5: Solve for x
   x = 3,110,988.71/2,545.98
6. Step 6: Final answer
   x = 1,221.92