Finding the Fourth Proportional to 2,101.27, 3,149.67 and 1,003.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.27 : 3,149.67 = 1,003.31 : x
2. Step 2: Convert to fraction form
   2,101.27/3,149.67 = 1,003.31/x
3. Step 3: Cross multiply
   2,101.27x = 3,149.67 × 1,003.31
4. Step 4: Simplify right side
   2,101.27x = 3,160,095.41
5. Step 5: Solve for x
   x = 3,160,095.41/2,101.27
6. Step 6: Final answer
   x = 1,503.90