Finding the Fourth Proportional to 2,271.46, 3,405.57 and 972.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.46 : 3,405.57 = 972.22 : x
2. Step 2: Convert to fraction form
   2,271.46/3,405.57 = 972.22/x
3. Step 3: Cross multiply
   2,271.46x = 3,405.57 × 972.22
4. Step 4: Simplify right side
   2,271.46x = 3,310,963.27
5. Step 5: Solve for x
   x = 3,310,963.27/2,271.46
6. Step 6: Final answer
   x = 1,457.64