Finding the Fourth Proportional to 3,790.38, 5,230.71 and 2,111.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,790.38 : 5,230.71 = 2,111.69 : x
2. Step 2: Convert to fraction form
   3,790.38/5,230.71 = 2,111.69/x
3. Step 3: Cross multiply
   3,790.38x = 5,230.71 × 2,111.69
4. Step 4: Simplify right side
   3,790.38x = 11,045,631.46
5. Step 5: Solve for x
   x = 11,045,631.46/3,790.38
6. Step 6: Final answer
   x = 2,914.12