Finding the Fourth Proportional to 2,111, 3,164.04 and 1,245.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111 : 3,164.04 = 1,245.92 : x
2. Step 2: Convert to fraction form
   2,111/3,164.04 = 1,245.92/x
3. Step 3: Cross multiply
   2,111x = 3,164.04 × 1,245.92
4. Step 4: Simplify right side
   2,111x = 3,942,140.72
5. Step 5: Solve for x
   x = 3,942,140.72/2,111
6. Step 6: Final answer
   x = 1,867.43