Finding the Fourth Proportional to 1,017.94, 1,404.74 and 552.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.94 : 1,404.74 = 552.20 : x
2. Step 2: Convert to fraction form
   1,017.94/1,404.74 = 552.20/x
3. Step 3: Cross multiply
   1,017.94x = 1,404.74 × 552.20
4. Step 4: Simplify right side
   1,017.94x = 775,697.43
5. Step 5: Solve for x
   x = 775,697.43/1,017.94
6. Step 6: Final answer
   x = 762.03