Finding the Fourth Proportional to 3,970.46, 5,477.81 and 2,477.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,970.46 : 5,477.81 = 2,477.16 : x
2. Step 2: Convert to fraction form
   3,970.46/5,477.81 = 2,477.16/x
3. Step 3: Cross multiply
   3,970.46x = 5,477.81 × 2,477.16
4. Step 4: Simplify right side
   3,970.46x = 13,569,399.43
5. Step 5: Solve for x
   x = 13,569,399.43/3,970.46
6. Step 6: Final answer
   x = 3,417.59