Finding the Fourth Proportional to 1,216.82, 1,825.52 and 395.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216.82 : 1,825.52 = 395.10 : x
2. Step 2: Convert to fraction form
   1,216.82/1,825.52 = 395.10/x
3. Step 3: Cross multiply
   1,216.82x = 1,825.52 × 395.10
4. Step 4: Simplify right side
   1,216.82x = 721,262.95
5. Step 5: Solve for x
   x = 721,262.95/1,216.82
6. Step 6: Final answer
   x = 592.74