Finding the Fourth Proportional to 3,660.71, 5,051.58 and 2,168.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,660.71 : 5,051.58 = 2,168.77 : x
2. Step 2: Convert to fraction form
   3,660.71/5,051.58 = 2,168.77/x
3. Step 3: Cross multiply
   3,660.71x = 5,051.58 × 2,168.77
4. Step 4: Simplify right side
   3,660.71x = 10,955,704.31
5. Step 5: Solve for x
   x = 10,955,704.31/3,660.71
6. Step 6: Final answer
   x = 2,992.78