Finding the Fourth Proportional to 1,190.38, 1,786.72 and 574.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,190.38 : 1,786.72 = 574.52 : x
2. Step 2: Convert to fraction form
   1,190.38/1,786.72 = 574.52/x
3. Step 3: Cross multiply
   1,190.38x = 1,786.72 × 574.52
4. Step 4: Simplify right side
   1,190.38x = 1,026,505.40
5. Step 5: Solve for x
   x = 1,026,505.40/1,190.38
6. Step 6: Final answer
   x = 862.33