Finding the Fourth Proportional to 1,630.31, 2,249.78 and 922.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,630.31 : 2,249.78 = 922.23 : x
2. Step 2: Convert to fraction form
   1,630.31/2,249.78 = 922.23/x
3. Step 3: Cross multiply
   1,630.31x = 2,249.78 × 922.23
4. Step 4: Simplify right side
   1,630.31x = 2,074,810.00
5. Step 5: Solve for x
   x = 2,074,810.00/1,630.31
6. Step 6: Final answer
   x = 1,272.65