Finding the Fourth Proportional to 1,916.50, 2,644.82 and 1,077.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,916.50 : 2,644.82 = 1,077.27 : x
2. Step 2: Convert to fraction form
   1,916.50/2,644.82 = 1,077.27/x
3. Step 3: Cross multiply
   1,916.50x = 2,644.82 × 1,077.27
4. Step 4: Simplify right side
   1,916.50x = 2,849,185.24
5. Step 5: Solve for x
   x = 2,849,185.24/1,916.50
6. Step 6: Final answer
   x = 1,486.66