Finding the Fourth Proportional to 3,790.40, 5,230.83 and 2,111.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,790.40 : 5,230.83 = 2,111.96 : x
2. Step 2: Convert to fraction form
   3,790.40/5,230.83 = 2,111.96/x
3. Step 3: Cross multiply
   3,790.40x = 5,230.83 × 2,111.96
4. Step 4: Simplify right side
   3,790.40x = 11,047,303.73
5. Step 5: Solve for x
   x = 11,047,303.73/3,790.40
6. Step 6: Final answer
   x = 2,914.55