Finding the Fourth Proportional to 1,018.89, 1,527.33 and 498.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.89 : 1,527.33 = 498.27 : x
2. Step 2: Convert to fraction form
   1,018.89/1,527.33 = 498.27/x
3. Step 3: Cross multiply
   1,018.89x = 1,527.33 × 498.27
4. Step 4: Simplify right side
   1,018.89x = 761,022.72
5. Step 5: Solve for x
   x = 761,022.72/1,018.89
6. Step 6: Final answer
   x = 746.91