Finding the Fourth Proportional to 2,271.24, 3,407.22 and 972.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.24 : 3,407.22 = 972.72 : x
2. Step 2: Convert to fraction form
   2,271.24/3,407.22 = 972.72/x
3. Step 3: Cross multiply
   2,271.24x = 3,407.22 × 972.72
4. Step 4: Simplify right side
   2,271.24x = 3,314,271.04
5. Step 5: Solve for x
   x = 3,314,271.04/2,271.24
6. Step 6: Final answer
   x = 1,459.23