Finding the Fourth Proportional to 2,650.70, 3,660.06 and 2,152.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.70 : 3,660.06 = 2,152.55 : x
2. Step 2: Convert to fraction form
   2,650.70/3,660.06 = 2,152.55/x
3. Step 3: Cross multiply
   2,650.70x = 3,660.06 × 2,152.55
4. Step 4: Simplify right side
   2,650.70x = 7,878,462.15
5. Step 5: Solve for x
   x = 7,878,462.15/2,650.70
6. Step 6: Final answer
   x = 2,972.22