Finding the Fourth Proportional to 1,019.39, 1,528.17 and 369.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.39 : 1,528.17 = 369.97 : x
2. Step 2: Convert to fraction form
   1,019.39/1,528.17 = 369.97/x
3. Step 3: Cross multiply
   1,019.39x = 1,528.17 × 369.97
4. Step 4: Simplify right side
   1,019.39x = 565,377.05
5. Step 5: Solve for x
   x = 565,377.05/1,019.39
6. Step 6: Final answer
   x = 554.62