Finding the Fourth Proportional to 1,049.72, 1,574.56 and 433.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.72 : 1,574.56 = 433.32 : x
2. Step 2: Convert to fraction form
   1,049.72/1,574.56 = 433.32/x
3. Step 3: Cross multiply
   1,049.72x = 1,574.56 × 433.32
4. Step 4: Simplify right side
   1,049.72x = 682,288.34
5. Step 5: Solve for x
   x = 682,288.34/1,049.72
6. Step 6: Final answer
   x = 649.97