Finding the Fourth Proportional to 1,630.26, 2,249.82 and 931.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,630.26 : 2,249.82 = 931.50 : x
2. Step 2: Convert to fraction form
   1,630.26/2,249.82 = 931.50/x
3. Step 3: Cross multiply
   1,630.26x = 2,249.82 × 931.50
4. Step 4: Simplify right side
   1,630.26x = 2,095,707.33
5. Step 5: Solve for x
   x = 2,095,707.33/1,630.26
6. Step 6: Final answer
   x = 1,285.50