Finding the Fourth Proportional to 1,344.05, 2,008.28 and 972.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.05 : 2,008.28 = 972.09 : x
2. Step 2: Convert to fraction form
   1,344.05/2,008.28 = 972.09/x
3. Step 3: Cross multiply
   1,344.05x = 2,008.28 × 972.09
4. Step 4: Simplify right side
   1,344.05x = 1,952,228.91
5. Step 5: Solve for x
   x = 1,952,228.91/1,344.05
6. Step 6: Final answer
   x = 1,452.50