Finding the Fourth Proportional to 1,003.42, 1,506.75 and 938.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.42 : 1,506.75 = 938.62 : x
2. Step 2: Convert to fraction form
   1,003.42/1,506.75 = 938.62/x
3. Step 3: Cross multiply
   1,003.42x = 1,506.75 × 938.62
4. Step 4: Simplify right side
   1,003.42x = 1,414,265.69
5. Step 5: Solve for x
   x = 1,414,265.69/1,003.42
6. Step 6: Final answer
   x = 1,409.45