Finding the Fourth Proportional to 2,071, 2,857.98 and 1,243

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071 : 2,857.98 = 1,243 : x
2. Step 2: Convert to fraction form
   2,071/2,857.98 = 1,243/x
3. Step 3: Cross multiply
   2,071x = 2,857.98 × 1,243
4. Step 4: Simplify right side
   2,071x = 3,552,469.14
5. Step 5: Solve for x
   x = 3,552,469.14/2,071
6. Step 6: Final answer
   x = 1,715.34