Finding the Fourth Proportional to 1,648.17, 2,456.10 and 1,603.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.17 : 2,456.10 = 1,603.06 : x
2. Step 2: Convert to fraction form
   1,648.17/2,456.10 = 1,603.06/x
3. Step 3: Cross multiply
   1,648.17x = 2,456.10 × 1,603.06
4. Step 4: Simplify right side
   1,648.17x = 3,937,269.53
5. Step 5: Solve for x
   x = 3,937,269.53/1,648.17
6. Step 6: Final answer
   x = 2,388.87