Finding the Fourth Proportional to 1,604.78, 2,214.69 and 896.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,604.78 : 2,214.69 = 896.69 : x
2. Step 2: Convert to fraction form
   1,604.78/2,214.69 = 896.69/x
3. Step 3: Cross multiply
   1,604.78x = 2,214.69 × 896.69
4. Step 4: Simplify right side
   1,604.78x = 1,985,890.38
5. Step 5: Solve for x
   x = 1,985,890.38/1,604.78
6. Step 6: Final answer
   x = 1,237.48