Finding the Fourth Proportional to 1,083.81, 1,626.24 and 672.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.81 : 1,626.24 = 672.84 : x
2. Step 2: Convert to fraction form
   1,083.81/1,626.24 = 672.84/x
3. Step 3: Cross multiply
   1,083.81x = 1,626.24 × 672.84
4. Step 4: Simplify right side
   1,083.81x = 1,094,199.32
5. Step 5: Solve for x
   x = 1,094,199.32/1,083.81
6. Step 6: Final answer
   x = 1,009.59