Finding the Fourth Proportional to 1,641.78, 2,265.58 and 895.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.78 : 2,265.58 = 895.72 : x
2. Step 2: Convert to fraction form
   1,641.78/2,265.58 = 895.72/x
3. Step 3: Cross multiply
   1,641.78x = 2,265.58 × 895.72
4. Step 4: Simplify right side
   1,641.78x = 2,029,325.32
5. Step 5: Solve for x
   x = 2,029,325.32/1,641.78
6. Step 6: Final answer
   x = 1,236.05