Finding the Fourth Proportional to 1,394.48, 1,923.04 and 974.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,394.48 : 1,923.04 = 974.30 : x
2. Step 2: Convert to fraction form
   1,394.48/1,923.04 = 974.30/x
3. Step 3: Cross multiply
   1,394.48x = 1,923.04 × 974.30
4. Step 4: Simplify right side
   1,394.48x = 1,873,609.47
5. Step 5: Solve for x
   x = 1,873,609.47/1,394.48
6. Step 6: Final answer
   x = 1,343.59