Finding the Fourth Proportional to 1,088.52, 1,632.72 and 308.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.52 : 1,632.72 = 308.55 : x
2. Step 2: Convert to fraction form
   1,088.52/1,632.72 = 308.55/x
3. Step 3: Cross multiply
   1,088.52x = 1,632.72 × 308.55
4. Step 4: Simplify right side
   1,088.52x = 503,775.76
5. Step 5: Solve for x
   x = 503,775.76/1,088.52
6. Step 6: Final answer
   x = 462.81