Finding the Fourth Proportional to 2,454.35, 3,681.15 and 810.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,454.35 : 3,681.15 = 810.76 : x
2. Step 2: Convert to fraction form
   2,454.35/3,681.15 = 810.76/x
3. Step 3: Cross multiply
   2,454.35x = 3,681.15 × 810.76
4. Step 4: Simplify right side
   2,454.35x = 2,984,523.83
5. Step 5: Solve for x
   x = 2,984,523.83/2,454.35
6. Step 6: Final answer
   x = 1,216.01