Finding the Fourth Proportional to 1,646.38, 2,270.30 and 1,273.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.38 : 2,270.30 = 1,273.42 : x
2. Step 2: Convert to fraction form
   1,646.38/2,270.30 = 1,273.42/x
3. Step 3: Cross multiply
   1,646.38x = 2,270.30 × 1,273.42
4. Step 4: Simplify right side
   1,646.38x = 2,891,045.43
5. Step 5: Solve for x
   x = 2,891,045.43/1,646.38
6. Step 6: Final answer
   x = 1,756.00