Finding the Fourth Proportional to 1,630.34, 2,249.89 and 931.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,630.34 : 2,249.89 = 931.71 : x
2. Step 2: Convert to fraction form
   1,630.34/2,249.89 = 931.71/x
3. Step 3: Cross multiply
   1,630.34x = 2,249.89 × 931.71
4. Step 4: Simplify right side
   1,630.34x = 2,096,245.01
5. Step 5: Solve for x
   x = 2,096,245.01/1,630.34
6. Step 6: Final answer
   x = 1,285.77