Finding the Fourth Proportional to 1,155.30, 1,733.71 and 424.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.30 : 1,733.71 = 424.89 : x
2. Step 2: Convert to fraction form
   1,155.30/1,733.71 = 424.89/x
3. Step 3: Cross multiply
   1,155.30x = 1,733.71 × 424.89
4. Step 4: Simplify right side
   1,155.30x = 736,627.37
5. Step 5: Solve for x
   x = 736,627.37/1,155.30
6. Step 6: Final answer
   x = 637.61