Finding the Fourth Proportional to 3,976.94, 5,487.30 and 2,405.00

Step by Step Solution

1. Step 1: Write the proportion equation
   3,976.94 : 5,487.30 = 2,405.00 : x
2. Step 2: Convert to fraction form
   3,976.94/5,487.30 = 2,405.00/x
3. Step 3: Cross multiply
   3,976.94x = 5,487.30 × 2,405.00
4. Step 4: Simplify right side
   3,976.94x = 13,196,929.06
5. Step 5: Solve for x
   x = 13,196,929.06/3,976.94
6. Step 6: Final answer
   x = 3,318.37