Finding the Fourth Proportional to 1,640.38, 2,263.69 and 894.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,640.38 : 2,263.69 = 894.34 : x
2. Step 2: Convert to fraction form
   1,640.38/2,263.69 = 894.34/x
3. Step 3: Cross multiply
   1,640.38x = 2,263.69 × 894.34
4. Step 4: Simplify right side
   1,640.38x = 2,024,510.23
5. Step 5: Solve for x
   x = 2,024,510.23/1,640.38
6. Step 6: Final answer
   x = 1,234.17