Finding the Fourth Proportional to 3,789.87, 5,230.05 and 2,111.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,789.87 : 5,230.05 = 2,111.34 : x
2. Step 2: Convert to fraction form
   3,789.87/5,230.05 = 2,111.34/x
3. Step 3: Cross multiply
   3,789.87x = 5,230.05 × 2,111.34
4. Step 4: Simplify right side
   3,789.87x = 11,042,413.77
5. Step 5: Solve for x
   x = 11,042,413.77/3,789.87
6. Step 6: Final answer
   x = 2,913.67