Finding the Fourth Proportional to 1,826.69, 2,738.40 and 672.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,826.69 : 2,738.40 = 672.17 : x
2. Step 2: Convert to fraction form
   1,826.69/2,738.40 = 672.17/x
3. Step 3: Cross multiply
   1,826.69x = 2,738.40 × 672.17
4. Step 4: Simplify right side
   1,826.69x = 1,840,656.64
5. Step 5: Solve for x
   x = 1,840,656.64/1,826.69
6. Step 6: Final answer
   x = 1,007.65