Finding the Fourth Proportional to 1,010.42, 1,514.67 and 394.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,010.42 : 1,514.67 = 394.52 : x
2. Step 2: Convert to fraction form
   1,010.42/1,514.67 = 394.52/x
3. Step 3: Cross multiply
   1,010.42x = 1,514.67 × 394.52
4. Step 4: Simplify right side
   1,010.42x = 597,567.61
5. Step 5: Solve for x
   x = 597,567.61/1,010.42
6. Step 6: Final answer
   x = 591.41