Finding the Fourth Proportional to 3,665.70, 5,488.83 and 1,930.68

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.70 : 5,488.83 = 1,930.68 : x
2. Step 2: Convert to fraction form
   3,665.70/5,488.83 = 1,930.68/x
3. Step 3: Cross multiply
   3,665.70x = 5,488.83 × 1,930.68
4. Step 4: Simplify right side
   3,665.70x = 10,597,174.30
5. Step 5: Solve for x
   x = 10,597,174.30/3,665.70
6. Step 6: Final answer
   x = 2,890.90