Finding the Fourth Proportional to 1,018.03, 1,404.88 and 552.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.03 : 1,404.88 = 552.28 : x
2. Step 2: Convert to fraction form
   1,018.03/1,404.88 = 552.28/x
3. Step 3: Cross multiply
   1,018.03x = 1,404.88 × 552.28
4. Step 4: Simplify right side
   1,018.03x = 775,887.13
5. Step 5: Solve for x
   x = 775,887.13/1,018.03
6. Step 6: Final answer
   x = 762.15