Finding the Fourth Proportional to 2,453.10, 3,679.59 and 808.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.10 : 3,679.59 = 808.98 : x
2. Step 2: Convert to fraction form
   2,453.10/3,679.59 = 808.98/x
3. Step 3: Cross multiply
   2,453.10x = 3,679.59 × 808.98
4. Step 4: Simplify right side
   2,453.10x = 2,976,714.72
5. Step 5: Solve for x
   x = 2,976,714.72/2,453.10
6. Step 6: Final answer
   x = 1,213.45