Finding the Fourth Proportional to 4,111.05, 5,672.61 and 2,318.61

Step by Step Solution

1. Step 1: Write the proportion equation
   4,111.05 : 5,672.61 = 2,318.61 : x
2. Step 2: Convert to fraction form
   4,111.05/5,672.61 = 2,318.61/x
3. Step 3: Cross multiply
   4,111.05x = 5,672.61 × 2,318.61
4. Step 4: Simplify right side
   4,111.05x = 13,152,570.27
5. Step 5: Solve for x
   x = 13,152,570.27/4,111.05
6. Step 6: Final answer
   x = 3,199.32