Finding the Fourth Proportional to 1,045.38, 1,442.56 and 573.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.38 : 1,442.56 = 573.18 : x
2. Step 2: Convert to fraction form
   1,045.38/1,442.56 = 573.18/x
3. Step 3: Cross multiply
   1,045.38x = 1,442.56 × 573.18
4. Step 4: Simplify right side
   1,045.38x = 826,846.54
5. Step 5: Solve for x
   x = 826,846.54/1,045.38
6. Step 6: Final answer
   x = 790.95