Finding the Fourth Proportional to 2,007.71, 2,998.22 and 1,985.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.71 : 2,998.22 = 1,985.99 : x
2. Step 2: Convert to fraction form
   2,007.71/2,998.22 = 1,985.99/x
3. Step 3: Cross multiply
   2,007.71x = 2,998.22 × 1,985.99
4. Step 4: Simplify right side
   2,007.71x = 5,954,410.02
5. Step 5: Solve for x
   x = 5,954,410.02/2,007.71
6. Step 6: Final answer
   x = 2,965.78