Finding the Fourth Proportional to 2,475.81, 3,714.29 and 810.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,475.81 : 3,714.29 = 810.03 : x
2. Step 2: Convert to fraction form
   2,475.81/3,714.29 = 810.03/x
3. Step 3: Cross multiply
   2,475.81x = 3,714.29 × 810.03
4. Step 4: Simplify right side
   2,475.81x = 3,008,686.33
5. Step 5: Solve for x
   x = 3,008,686.33/2,475.81
6. Step 6: Final answer
   x = 1,215.23