Finding the Fourth Proportional to 1,088.78, 1,632.98 and 358.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.78 : 1,632.98 = 358.25 : x
2. Step 2: Convert to fraction form
   1,088.78/1,632.98 = 358.25/x
3. Step 3: Cross multiply
   1,088.78x = 1,632.98 × 358.25
4. Step 4: Simplify right side
   1,088.78x = 585,007.82
5. Step 5: Solve for x
   x = 585,007.82/1,088.78
6. Step 6: Final answer
   x = 537.31