Finding the Fourth Proportional to 2,413.40, 3,618.86 and 1,113.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,413.40 : 3,618.86 = 1,113.75 : x
2. Step 2: Convert to fraction form
   2,413.40/3,618.86 = 1,113.75/x
3. Step 3: Cross multiply
   2,413.40x = 3,618.86 × 1,113.75
4. Step 4: Simplify right side
   2,413.40x = 4,030,499.76
5. Step 5: Solve for x
   x = 4,030,499.76/2,413.40
6. Step 6: Final answer
   x = 1,670.05