Finding the Fourth Proportional to 3,663.31, 5,057.70 and 2,406.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.31 : 5,057.70 = 2,406.60 : x
2. Step 2: Convert to fraction form
   3,663.31/5,057.70 = 2,406.60/x
3. Step 3: Cross multiply
   3,663.31x = 5,057.70 × 2,406.60
4. Step 4: Simplify right side
   3,663.31x = 12,171,860.82
5. Step 5: Solve for x
   x = 12,171,860.82/3,663.31
6. Step 6: Final answer
   x = 3,322.64