Finding the Fourth Proportional to 2,475.98, 3,714.03 and 810.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,475.98 : 3,714.03 = 810.09 : x
2. Step 2: Convert to fraction form
   2,475.98/3,714.03 = 810.09/x
3. Step 3: Cross multiply
   2,475.98x = 3,714.03 × 810.09
4. Step 4: Simplify right side
   2,475.98x = 3,008,698.56
5. Step 5: Solve for x
   x = 3,008,698.56/2,475.98
6. Step 6: Final answer
   x = 1,215.16