Finding the Fourth Proportional to 1,018.10, 1,404.99 and 552.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.10 : 1,404.99 = 552.35 : x
2. Step 2: Convert to fraction form
   1,018.10/1,404.99 = 552.35/x
3. Step 3: Cross multiply
   1,018.10x = 1,404.99 × 552.35
4. Step 4: Simplify right side
   1,018.10x = 776,049.74
5. Step 5: Solve for x
   x = 776,049.74/1,018.10
6. Step 6: Final answer
   x = 762.25