Finding the Fourth Proportional to 3,415.72, 5,123.68 and 950.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,415.72 : 5,123.68 = 950.72 : x
2. Step 2: Convert to fraction form
   3,415.72/5,123.68 = 950.72/x
3. Step 3: Cross multiply
   3,415.72x = 5,123.68 × 950.72
4. Step 4: Simplify right side
   3,415.72x = 4,871,185.05
5. Step 5: Solve for x
   x = 4,871,185.05/3,415.72
6. Step 6: Final answer
   x = 1,426.11