Finding the Fourth Proportional to 1,627.38, 2,443.50 and 1,578.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,627.38 : 2,443.50 = 1,578.78 : x
2. Step 2: Convert to fraction form
   1,627.38/2,443.50 = 1,578.78/x
3. Step 3: Cross multiply
   1,627.38x = 2,443.50 × 1,578.78
4. Step 4: Simplify right side
   1,627.38x = 3,857,748.93
5. Step 5: Solve for x
   x = 3,857,748.93/1,627.38
6. Step 6: Final answer
   x = 2,370.53