Finding the Fourth Proportional to 1,663.82, 2,491.10 and 1,079.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663.82 : 2,491.10 = 1,079.49 : x
2. Step 2: Convert to fraction form
   1,663.82/2,491.10 = 1,079.49/x
3. Step 3: Cross multiply
   1,663.82x = 2,491.10 × 1,079.49
4. Step 4: Simplify right side
   1,663.82x = 2,689,112.14
5. Step 5: Solve for x
   x = 2,689,112.14/1,663.82
6. Step 6: Final answer
   x = 1,616.23