Finding the Fourth Proportional to 2,127.83, 2,936.18 and 1,971.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,127.83 : 2,936.18 = 1,971.09 : x
2. Step 2: Convert to fraction form
   2,127.83/2,936.18 = 1,971.09/x
3. Step 3: Cross multiply
   2,127.83x = 2,936.18 × 1,971.09
4. Step 4: Simplify right side
   2,127.83x = 5,787,479.96
5. Step 5: Solve for x
   x = 5,787,479.96/2,127.83
6. Step 6: Final answer
   x = 2,719.90