Finding the Fourth Proportional to 1,648.32, 2,471.52 and 674.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.32 : 2,471.52 = 674.28 : x
2. Step 2: Convert to fraction form
   1,648.32/2,471.52 = 674.28/x
3. Step 3: Cross multiply
   1,648.32x = 2,471.52 × 674.28
4. Step 4: Simplify right side
   1,648.32x = 1,666,496.51
5. Step 5: Solve for x
   x = 1,666,496.51/1,648.32
6. Step 6: Final answer
   x = 1,011.03