Finding the Fourth Proportional to 1,018.89, 1,527.42 and 369.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.89 : 1,527.42 = 369.47 : x
2. Step 2: Convert to fraction form
   1,018.89/1,527.42 = 369.47/x
3. Step 3: Cross multiply
   1,018.89x = 1,527.42 × 369.47
4. Step 4: Simplify right side
   1,018.89x = 564,328.23
5. Step 5: Solve for x
   x = 564,328.23/1,018.89
6. Step 6: Final answer
   x = 553.87