Finding the Fourth Proportional to 1,916.71, 2,876.49 and 1,424.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,916.71 : 2,876.49 = 1,424.25 : x
2. Step 2: Convert to fraction form
   1,916.71/2,876.49 = 1,424.25/x
3. Step 3: Cross multiply
   1,916.71x = 2,876.49 × 1,424.25
4. Step 4: Simplify right side
   1,916.71x = 4,096,819.38
5. Step 5: Solve for x
   x = 4,096,819.38/1,916.71
6. Step 6: Final answer
   x = 2,137.43