Finding the Fourth Proportional to 2,209.13, 3,047.33 and 1,379.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.13 : 3,047.33 = 1,379.69 : x
2. Step 2: Convert to fraction form
   2,209.13/3,047.33 = 1,379.69/x
3. Step 3: Cross multiply
   2,209.13x = 3,047.33 × 1,379.69
4. Step 4: Simplify right side
   2,209.13x = 4,204,370.73
5. Step 5: Solve for x
   x = 4,204,370.73/2,209.13
6. Step 6: Final answer
   x = 1,903.18