Finding the Fourth Proportional to 1,603.78, 2,213.31 and 895.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.78 : 2,213.31 = 895.69 : x
2. Step 2: Convert to fraction form
   1,603.78/2,213.31 = 895.69/x
3. Step 3: Cross multiply
   1,603.78x = 2,213.31 × 895.69
4. Step 4: Simplify right side
   1,603.78x = 1,982,440.72
5. Step 5: Solve for x
   x = 1,982,440.72/1,603.78
6. Step 6: Final answer
   x = 1,236.10