Finding the Fourth Proportional to 2,427.82, 3,641.00 and 672.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,427.82 : 3,641.00 = 672.40 : x
2. Step 2: Convert to fraction form
   2,427.82/3,641.00 = 672.40/x
3. Step 3: Cross multiply
   2,427.82x = 3,641.00 × 672.40
4. Step 4: Simplify right side
   2,427.82x = 2,448,213.37
5. Step 5: Solve for x
   x = 2,448,213.37/2,427.82
6. Step 6: Final answer
   x = 1,008.40