Finding the Fourth Proportional to 1,155.33, 1,733.69 and 425.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.33 : 1,733.69 = 425.42 : x
2. Step 2: Convert to fraction form
   1,155.33/1,733.69 = 425.42/x
3. Step 3: Cross multiply
   1,155.33x = 1,733.69 × 425.42
4. Step 4: Simplify right side
   1,155.33x = 737,546.40
5. Step 5: Solve for x
   x = 737,546.40/1,155.33
6. Step 6: Final answer
   x = 638.39