Finding the Fourth Proportional to 2,059.57, 3,089.52 and 672.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.57 : 3,089.52 = 672.88 : x
2. Step 2: Convert to fraction form
   2,059.57/3,089.52 = 672.88/x
3. Step 3: Cross multiply
   2,059.57x = 3,089.52 × 672.88
4. Step 4: Simplify right side
   2,059.57x = 2,078,876.22
5. Step 5: Solve for x
   x = 2,078,876.22/2,059.57
6. Step 6: Final answer
   x = 1,009.37