Finding the Fourth Proportional to 2,960.61, 4,439.49 and 1,111.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,960.61 : 4,439.49 = 1,111.71 : x
2. Step 2: Convert to fraction form
   2,960.61/4,439.49 = 1,111.71/x
3. Step 3: Cross multiply
   2,960.61x = 4,439.49 × 1,111.71
4. Step 4: Simplify right side
   2,960.61x = 4,935,425.43
5. Step 5: Solve for x
   x = 4,935,425.43/2,960.61
6. Step 6: Final answer
   x = 1,667.03