Finding the Fourth Proportional to 3,790.18, 5,230.83 and 2,111.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,790.18 : 5,230.83 = 2,111.86 : x
2. Step 2: Convert to fraction form
   3,790.18/5,230.83 = 2,111.86/x
3. Step 3: Cross multiply
   3,790.18x = 5,230.83 × 2,111.86
4. Step 4: Simplify right side
   3,790.18x = 11,046,780.64
5. Step 5: Solve for x
   x = 11,046,780.64/3,790.18
6. Step 6: Final answer
   x = 2,914.58