Finding the Fourth Proportional to 3,558.25, 4,910.52 and 2,161

Step by Step Solution

1. Step 1: Write the proportion equation
   3,558.25 : 4,910.52 = 2,161 : x
2. Step 2: Convert to fraction form
   3,558.25/4,910.52 = 2,161/x
3. Step 3: Cross multiply
   3,558.25x = 4,910.52 × 2,161
4. Step 4: Simplify right side
   3,558.25x = 10,611,633.72
5. Step 5: Solve for x
   x = 10,611,633.72/3,558.25
6. Step 6: Final answer
   x = 2,982.26