Finding the Fourth Proportional to 2,454.41, 3,682.16 and 810.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,454.41 : 3,682.16 = 810.89 : x
2. Step 2: Convert to fraction form
   2,454.41/3,682.16 = 810.89/x
3. Step 3: Cross multiply
   2,454.41x = 3,682.16 × 810.89
4. Step 4: Simplify right side
   2,454.41x = 2,985,826.72
5. Step 5: Solve for x
   x = 2,985,826.72/2,454.41
6. Step 6: Final answer
   x = 1,216.52