Finding the Fourth Proportional to 3,606.68, 4,980.78 and 2,490.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,606.68 : 4,980.78 = 2,490.50 : x
2. Step 2: Convert to fraction form
   3,606.68/4,980.78 = 2,490.50/x
3. Step 3: Cross multiply
   3,606.68x = 4,980.78 × 2,490.50
4. Step 4: Simplify right side
   3,606.68x = 12,404,632.59
5. Step 5: Solve for x
   x = 12,404,632.59/3,606.68
6. Step 6: Final answer
   x = 3,439.35