Finding the Fourth Proportional to 1,394.83, 1,926.30 and 1,207.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,394.83 : 1,926.30 = 1,207.42 : x
2. Step 2: Convert to fraction form
   1,394.83/1,926.30 = 1,207.42/x
3. Step 3: Cross multiply
   1,394.83x = 1,926.30 × 1,207.42
4. Step 4: Simplify right side
   1,394.83x = 2,325,853.15
5. Step 5: Solve for x
   x = 2,325,853.15/1,394.83
6. Step 6: Final answer
   x = 1,667.48