Finding the Fourth Proportional to 1,397.34, 1,926 and 1,047.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.34 : 1,926 = 1,047.42 : x
2. Step 2: Convert to fraction form
   1,397.34/1,926 = 1,047.42/x
3. Step 3: Cross multiply
   1,397.34x = 1,926 × 1,047.42
4. Step 4: Simplify right side
   1,397.34x = 2,017,330.92
5. Step 5: Solve for x
   x = 2,017,330.92/1,397.34
6. Step 6: Final answer
   x = 1,443.69