Finding the Fourth Proportional to 2,487.20, 3,431.72 and 1,601.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.20 : 3,431.72 = 1,601.94 : x
2. Step 2: Convert to fraction form
   2,487.20/3,431.72 = 1,601.94/x
3. Step 3: Cross multiply
   2,487.20x = 3,431.72 × 1,601.94
4. Step 4: Simplify right side
   2,487.20x = 5,497,401.53
5. Step 5: Solve for x
   x = 5,497,401.53/2,487.20
6. Step 6: Final answer
   x = 2,210.28