Finding the Fourth Proportional to 2,141.25, 3,212.64 and 971.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.25 : 3,212.64 = 971.52 : x
2. Step 2: Convert to fraction form
   2,141.25/3,212.64 = 971.52/x
3. Step 3: Cross multiply
   2,141.25x = 3,212.64 × 971.52
4. Step 4: Simplify right side
   2,141.25x = 3,121,144.01
5. Step 5: Solve for x
   x = 3,121,144.01/2,141.25
6. Step 6: Final answer
   x = 1,457.63