Finding the Fourth Proportional to 1,641.38, 2,445.12 and 1,540.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.38 : 2,445.12 = 1,540.54 : x
2. Step 2: Convert to fraction form
   1,641.38/2,445.12 = 1,540.54/x
3. Step 3: Cross multiply
   1,641.38x = 2,445.12 × 1,540.54
4. Step 4: Simplify right side
   1,641.38x = 3,766,799.05
5. Step 5: Solve for x
   x = 3,766,799.05/1,641.38
6. Step 6: Final answer
   x = 2,294.89