Finding the Fourth Proportional to 2,752.58, 4,128.82 and 672.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,752.58 : 4,128.82 = 672.53 : x
2. Step 2: Convert to fraction form
   2,752.58/4,128.82 = 672.53/x
3. Step 3: Cross multiply
   2,752.58x = 4,128.82 × 672.53
4. Step 4: Simplify right side
   2,752.58x = 2,776,755.31
5. Step 5: Solve for x
   x = 2,776,755.31/2,752.58
6. Step 6: Final answer
   x = 1,008.78