Finding the Fourth Proportional to 2,128.69, 2,936.63 and 1,244.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.69 : 2,936.63 = 1,244.10 : x
2. Step 2: Convert to fraction form
   2,128.69/2,936.63 = 1,244.10/x
3. Step 3: Cross multiply
   2,128.69x = 2,936.63 × 1,244.10
4. Step 4: Simplify right side
   2,128.69x = 3,653,461.38
5. Step 5: Solve for x
   x = 3,653,461.38/2,128.69
6. Step 6: Final answer
   x = 1,716.30