Finding the Fourth Proportional to 1,630.38, 2,249.82 and 931.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,630.38 : 2,249.82 = 931.71 : x
2. Step 2: Convert to fraction form
   1,630.38/2,249.82 = 931.71/x
3. Step 3: Cross multiply
   1,630.38x = 2,249.82 × 931.71
4. Step 4: Simplify right side
   1,630.38x = 2,096,179.79
5. Step 5: Solve for x
   x = 2,096,179.79/1,630.38
6. Step 6: Final answer
   x = 1,285.70