Finding the Fourth Proportional to 2,005.52, 2,764.83 and 1,728.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,005.52 : 2,764.83 = 1,728.70 : x
2. Step 2: Convert to fraction form
   2,005.52/2,764.83 = 1,728.70/x
3. Step 3: Cross multiply
   2,005.52x = 2,764.83 × 1,728.70
4. Step 4: Simplify right side
   2,005.52x = 4,779,561.62
5. Step 5: Solve for x
   x = 4,779,561.62/2,005.52
6. Step 6: Final answer
   x = 2,383.20