Finding the Fourth Proportional to 1,747.89, 2,413.12 and 1,085.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,747.89 : 2,413.12 = 1,085.64 : x
2. Step 2: Convert to fraction form
   1,747.89/2,413.12 = 1,085.64/x
3. Step 3: Cross multiply
   1,747.89x = 2,413.12 × 1,085.64
4. Step 4: Simplify right side
   1,747.89x = 2,619,779.60
5. Step 5: Solve for x
   x = 2,619,779.60/1,747.89
6. Step 6: Final answer
   x = 1,498.82