Finding the Fourth Proportional to 2,379.85, 3,288.72 and 1,789.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.85 : 3,288.72 = 1,789.36 : x
2. Step 2: Convert to fraction form
   2,379.85/3,288.72 = 1,789.36/x
3. Step 3: Cross multiply
   2,379.85x = 3,288.72 × 1,789.36
4. Step 4: Simplify right side
   2,379.85x = 5,884,705.91
5. Step 5: Solve for x
   x = 5,884,705.91/2,379.85
6. Step 6: Final answer
   x = 2,472.72