Finding the Fourth Proportional to 1,627.89, 2,436.15 and 1,331.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,627.89 : 2,436.15 = 1,331.97 : x
2. Step 2: Convert to fraction form
   1,627.89/2,436.15 = 1,331.97/x
3. Step 3: Cross multiply
   1,627.89x = 2,436.15 × 1,331.97
4. Step 4: Simplify right side
   1,627.89x = 3,244,878.72
5. Step 5: Solve for x
   x = 3,244,878.72/1,627.89
6. Step 6: Final answer
   x = 1,993.30