Finding the Fourth Proportional to 2,144.53, 3,214.28 and 972.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.53 : 3,214.28 = 972.76 : x
2. Step 2: Convert to fraction form
   2,144.53/3,214.28 = 972.76/x
3. Step 3: Cross multiply
   2,144.53x = 3,214.28 × 972.76
4. Step 4: Simplify right side
   2,144.53x = 3,126,723.44
5. Step 5: Solve for x
   x = 3,126,723.44/2,144.53
6. Step 6: Final answer
   x = 1,458.00