Finding the Fourth Proportional to 1,100.61, 1,648.38 and 637.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.61 : 1,648.38 = 637.24 : x
2. Step 2: Convert to fraction form
   1,100.61/1,648.38 = 637.24/x
3. Step 3: Cross multiply
   1,100.61x = 1,648.38 × 637.24
4. Step 4: Simplify right side
   1,100.61x = 1,050,413.67
5. Step 5: Solve for x
   x = 1,050,413.67/1,100.61
6. Step 6: Final answer
   x = 954.39