Finding the Fourth Proportional to 912.82, 1,369.89 and 365.15

Step by Step Solution

1. Step 1: Write the proportion equation
   912.82 : 1,369.89 = 365.15 : x
2. Step 2: Convert to fraction form
   912.82/1,369.89 = 365.15/x
3. Step 3: Cross multiply
   912.82x = 1,369.89 × 365.15
4. Step 4: Simplify right side
   912.82x = 500,213.51
5. Step 5: Solve for x
   x = 500,213.51/912.82
6. Step 6: Final answer
   x = 547.99