Finding the Fourth Proportional to 1,916.03, 2,643.89 and 1,076.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,916.03 : 2,643.89 = 1,076.63 : x
2. Step 2: Convert to fraction form
   1,916.03/2,643.89 = 1,076.63/x
3. Step 3: Cross multiply
   1,916.03x = 2,643.89 × 1,076.63
4. Step 4: Simplify right side
   1,916.03x = 2,846,472.69
5. Step 5: Solve for x
   x = 2,846,472.69/1,916.03
6. Step 6: Final answer
   x = 1,485.61