Finding the Fourth Proportional to 2,271.52, 3,404.88 and 972.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.52 : 3,404.88 = 972.16 : x
2. Step 2: Convert to fraction form
   2,271.52/3,404.88 = 972.16/x
3. Step 3: Cross multiply
   2,271.52x = 3,404.88 × 972.16
4. Step 4: Simplify right side
   2,271.52x = 3,310,088.14
5. Step 5: Solve for x
   x = 3,310,088.14/2,271.52
6. Step 6: Final answer
   x = 1,457.21