Finding the Fourth Proportional to 2,209.16, 3,047.37 and 1,379.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.16 : 3,047.37 = 1,379.72 : x
2. Step 2: Convert to fraction form
   2,209.16/3,047.37 = 1,379.72/x
3. Step 3: Cross multiply
   2,209.16x = 3,047.37 × 1,379.72
4. Step 4: Simplify right side
   2,209.16x = 4,204,524.95
5. Step 5: Solve for x
   x = 4,204,524.95/2,209.16
6. Step 6: Final answer
   x = 1,903.22