Finding the Fourth Proportional to 1,024.72, 1,413.64 and 651.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,024.72 : 1,413.64 = 651.60 : x
2. Step 2: Convert to fraction form
   1,024.72/1,413.64 = 651.60/x
3. Step 3: Cross multiply
   1,024.72x = 1,413.64 × 651.60
4. Step 4: Simplify right side
   1,024.72x = 921,127.82
5. Step 5: Solve for x
   x = 921,127.82/1,024.72
6. Step 6: Final answer
   x = 898.91