Finding the Fourth Proportional to 3,976.46, 5,485.02 and 2,561.99

Step by Step Solution

1. Step 1: Write the proportion equation
   3,976.46 : 5,485.02 = 2,561.99 : x
2. Step 2: Convert to fraction form
   3,976.46/5,485.02 = 2,561.99/x
3. Step 3: Cross multiply
   3,976.46x = 5,485.02 × 2,561.99
4. Step 4: Simplify right side
   3,976.46x = 14,052,538.96
5. Step 5: Solve for x
   x = 14,052,538.96/3,976.46
6. Step 6: Final answer
   x = 3,533.94