Finding the Fourth Proportional to 2,289.24, 3,159.42 and 1,404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.24 : 3,159.42 = 1,404.72 : x
2. Step 2: Convert to fraction form
   2,289.24/3,159.42 = 1,404.72/x
3. Step 3: Cross multiply
   2,289.24x = 3,159.42 × 1,404.72
4. Step 4: Simplify right side
   2,289.24x = 4,438,100.46
5. Step 5: Solve for x
   x = 4,438,100.46/2,289.24
6. Step 6: Final answer
   x = 1,938.68