Finding the Fourth Proportional to 1,155.30, 1,732.76 and 424.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.30 : 1,732.76 = 424.82 : x
2. Step 2: Convert to fraction form
   1,155.30/1,732.76 = 424.82/x
3. Step 3: Cross multiply
   1,155.30x = 1,732.76 × 424.82
4. Step 4: Simplify right side
   1,155.30x = 736,111.10
5. Step 5: Solve for x
   x = 736,111.10/1,155.30
6. Step 6: Final answer
   x = 637.16