Finding the Fourth Proportional to 3,087.30, 4,631.67 and 896.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,087.30 : 4,631.67 = 896.07 : x
2. Step 2: Convert to fraction form
   3,087.30/4,631.67 = 896.07/x
3. Step 3: Cross multiply
   3,087.30x = 4,631.67 × 896.07
4. Step 4: Simplify right side
   3,087.30x = 4,150,300.54
5. Step 5: Solve for x
   x = 4,150,300.54/3,087.30
6. Step 6: Final answer
   x = 1,344.31