Finding the Fourth Proportional to 1,247.71, 1,722.05 and 952.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,247.71 : 1,722.05 = 952.42 : x
2. Step 2: Convert to fraction form
   1,247.71/1,722.05 = 952.42/x
3. Step 3: Cross multiply
   1,247.71x = 1,722.05 × 952.42
4. Step 4: Simplify right side
   1,247.71x = 1,640,114.86
5. Step 5: Solve for x
   x = 1,640,114.86/1,247.71
6. Step 6: Final answer
   x = 1,314.50