Finding the Fourth Proportional to 1,646.82, 2,272.56 and 938.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.82 : 2,272.56 = 938.48 : x
2. Step 2: Convert to fraction form
   1,646.82/2,272.56 = 938.48/x
3. Step 3: Cross multiply
   1,646.82x = 2,272.56 × 938.48
4. Step 4: Simplify right side
   1,646.82x = 2,132,740.75
5. Step 5: Solve for x
   x = 2,132,740.75/1,646.82
6. Step 6: Final answer
   x = 1,295.07