Finding the Fourth Proportional to 2,113.40, 2,913.42 and 1,413.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.40 : 2,913.42 = 1,413.56 : x
2. Step 2: Convert to fraction form
   2,113.40/2,913.42 = 1,413.56/x
3. Step 3: Cross multiply
   2,113.40x = 2,913.42 × 1,413.56
4. Step 4: Simplify right side
   2,113.40x = 4,118,293.98
5. Step 5: Solve for x
   x = 4,118,293.98/2,113.40
6. Step 6: Final answer
   x = 1,948.66