Finding the Fourth Proportional to 3,558.05, 5,340.83 and 1,999.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,558.05 : 5,340.83 = 1,999.38 : x
2. Step 2: Convert to fraction form
   3,558.05/5,340.83 = 1,999.38/x
3. Step 3: Cross multiply
   3,558.05x = 5,340.83 × 1,999.38
4. Step 4: Simplify right side
   3,558.05x = 10,678,338.69
5. Step 5: Solve for x
   x = 10,678,338.69/3,558.05
6. Step 6: Final answer
   x = 3,001.18