Finding the Fourth Proportional to 1,019.03, 1,528.56 and 402.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.03 : 1,528.56 = 402.82 : x
2. Step 2: Convert to fraction form
   1,019.03/1,528.56 = 402.82/x
3. Step 3: Cross multiply
   1,019.03x = 1,528.56 × 402.82
4. Step 4: Simplify right side
   1,019.03x = 615,734.54
5. Step 5: Solve for x
   x = 615,734.54/1,019.03
6. Step 6: Final answer
   x = 604.24