Finding the Fourth Proportional to 3,987.38, 5,974.59 and 2,345.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987.38 : 5,974.59 = 2,345.42 : x
2. Step 2: Convert to fraction form
   3,987.38/5,974.59 = 2,345.42/x
3. Step 3: Cross multiply
   3,987.38x = 5,974.59 × 2,345.42
4. Step 4: Simplify right side
   3,987.38x = 14,012,922.88
5. Step 5: Solve for x
   x = 14,012,922.88/3,987.38
6. Step 6: Final answer
   x = 3,514.32