Finding the Fourth Proportional to 1,904.27, 2,856.45 and 672.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,904.27 : 2,856.45 = 672.53 : x
2. Step 2: Convert to fraction form
   1,904.27/2,856.45 = 672.53/x
3. Step 3: Cross multiply
   1,904.27x = 2,856.45 × 672.53
4. Step 4: Simplify right side
   1,904.27x = 1,921,036.56
5. Step 5: Solve for x
   x = 1,921,036.56/1,904.27
6. Step 6: Final answer
   x = 1,008.81