Finding the Fourth Proportional to 1,632.69, 2,447.78 and 810.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,632.69 : 2,447.78 = 810.32 : x
2. Step 2: Convert to fraction form
   1,632.69/2,447.78 = 810.32/x
3. Step 3: Cross multiply
   1,632.69x = 2,447.78 × 810.32
4. Step 4: Simplify right side
   1,632.69x = 1,983,494.03
5. Step 5: Solve for x
   x = 1,983,494.03/1,632.69
6. Step 6: Final answer
   x = 1,214.86