Finding the Fourth Proportional to 1,045.12, 1,442.27 and 573.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,045.12 : 1,442.27 = 573.02 : x
2. Step 2: Convert to fraction form
   1,045.12/1,442.27 = 573.02/x
3. Step 3: Cross multiply
   1,045.12x = 1,442.27 × 573.02
4. Step 4: Simplify right side
   1,045.12x = 826,446.69
5. Step 5: Solve for x
   x = 826,446.69/1,045.12
6. Step 6: Final answer
   x = 790.77