Finding the Fourth Proportional to 2,900.71, 4,005.89 and 2,006.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,900.71 : 4,005.89 = 2,006.83 : x
2. Step 2: Convert to fraction form
   2,900.71/4,005.89 = 2,006.83/x
3. Step 3: Cross multiply
   2,900.71x = 4,005.89 × 2,006.83
4. Step 4: Simplify right side
   2,900.71x = 8,039,140.23
5. Step 5: Solve for x
   x = 8,039,140.23/2,900.71
6. Step 6: Final answer
   x = 2,771.44