Finding the Fourth Proportional to 2,229.83, 3,077.67 and 1,390.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,229.83 : 3,077.67 = 1,390.37 : x
2. Step 2: Convert to fraction form
   2,229.83/3,077.67 = 1,390.37/x
3. Step 3: Cross multiply
   2,229.83x = 3,077.67 × 1,390.37
4. Step 4: Simplify right side
   2,229.83x = 4,279,100.04
5. Step 5: Solve for x
   x = 4,279,100.04/2,229.83
6. Step 6: Final answer
   x = 1,919.03