Finding the Fourth Proportional to 2,451.80, 3,676.52 and 807.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,451.80 : 3,676.52 = 807.71 : x
2. Step 2: Convert to fraction form
   2,451.80/3,676.52 = 807.71/x
3. Step 3: Cross multiply
   2,451.80x = 3,676.52 × 807.71
4. Step 4: Simplify right side
   2,451.80x = 2,969,545.61
5. Step 5: Solve for x
   x = 2,969,545.61/2,451.80
6. Step 6: Final answer
   x = 1,211.17