Finding the Fourth Proportional to 1,436.82, 2,155.58 and 410.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.82 : 2,155.58 = 410.82 : x
2. Step 2: Convert to fraction form
   1,436.82/2,155.58 = 410.82/x
3. Step 3: Cross multiply
   1,436.82x = 2,155.58 × 410.82
4. Step 4: Simplify right side
   1,436.82x = 885,555.38
5. Step 5: Solve for x
   x = 885,555.38/1,436.82
6. Step 6: Final answer
   x = 616.33