Finding the Fourth Proportional to 3,087.72, 4,632.34 and 896.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,087.72 : 4,632.34 = 896.47 : x
2. Step 2: Convert to fraction form
   3,087.72/4,632.34 = 896.47/x
3. Step 3: Cross multiply
   3,087.72x = 4,632.34 × 896.47
4. Step 4: Simplify right side
   3,087.72x = 4,152,741.70
5. Step 5: Solve for x
   x = 4,152,741.70/3,087.72
6. Step 6: Final answer
   x = 1,344.92