Finding the Fourth Proportional to 1,012.41, 1,518.89 and 363.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012.41 : 1,518.89 = 363.15 : x
2. Step 2: Convert to fraction form
   1,012.41/1,518.89 = 363.15/x
3. Step 3: Cross multiply
   1,012.41x = 1,518.89 × 363.15
4. Step 4: Simplify right side
   1,012.41x = 551,583.09
5. Step 5: Solve for x
   x = 551,583.09/1,012.41
6. Step 6: Final answer
   x = 544.82