Finding the Fourth Proportional to 1,640.72, 2,264.24 and 894.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,640.72 : 2,264.24 = 894.75 : x
2. Step 2: Convert to fraction form
   1,640.72/2,264.24 = 894.75/x
3. Step 3: Cross multiply
   1,640.72x = 2,264.24 × 894.75
4. Step 4: Simplify right side
   1,640.72x = 2,025,917.45
5. Step 5: Solve for x
   x = 2,025,917.45/1,640.72
6. Step 6: Final answer
   x = 1,234.77