Finding the Fourth Proportional to 1,088.82, 1,632.15 and 440.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.82 : 1,632.15 = 440.01 : x
2. Step 2: Convert to fraction form
   1,088.82/1,632.15 = 440.01/x
3. Step 3: Cross multiply
   1,088.82x = 1,632.15 × 440.01
4. Step 4: Simplify right side
   1,088.82x = 718,162.32
5. Step 5: Solve for x
   x = 718,162.32/1,088.82
6. Step 6: Final answer
   x = 659.58