Finding the Fourth Proportional to 1,768.52, 2,651.74 and 672.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,768.52 : 2,651.74 = 672.18 : x
2. Step 2: Convert to fraction form
   1,768.52/2,651.74 = 672.18/x
3. Step 3: Cross multiply
   1,768.52x = 2,651.74 × 672.18
4. Step 4: Simplify right side
   1,768.52x = 1,782,446.59
5. Step 5: Solve for x
   x = 1,782,446.59/1,768.52
6. Step 6: Final answer
   x = 1,007.87