Finding the Fourth Proportional to 2,451.50, 3,677.30 and 808.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,451.50 : 3,677.30 = 808.18 : x
2. Step 2: Convert to fraction form
   2,451.50/3,677.30 = 808.18/x
3. Step 3: Cross multiply
   2,451.50x = 3,677.30 × 808.18
4. Step 4: Simplify right side
   2,451.50x = 2,971,920.31
5. Step 5: Solve for x
   x = 2,971,920.31/2,451.50
6. Step 6: Final answer
   x = 1,212.29