Finding the Fourth Proportional to 1,003.86, 1,506.33 and 957.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.86 : 1,506.33 = 957.42 : x
2. Step 2: Convert to fraction form
   1,003.86/1,506.33 = 957.42/x
3. Step 3: Cross multiply
   1,003.86x = 1,506.33 × 957.42
4. Step 4: Simplify right side
   1,003.86x = 1,442,190.47
5. Step 5: Solve for x
   x = 1,442,190.47/1,003.86
6. Step 6: Final answer
   x = 1,436.65