Finding the Fourth Proportional to 1,397.25, 1,929.42 and 1,049.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.25 : 1,929.42 = 1,049.76 : x
2. Step 2: Convert to fraction form
   1,397.25/1,929.42 = 1,049.76/x
3. Step 3: Cross multiply
   1,397.25x = 1,929.42 × 1,049.76
4. Step 4: Simplify right side
   1,397.25x = 2,025,427.94
5. Step 5: Solve for x
   x = 2,025,427.94/1,397.25
6. Step 6: Final answer
   x = 1,449.58