Finding the Fourth Proportional to 2,289.42, 3,159.46 and 1,404.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.42 : 3,159.46 = 1,404.70 : x
2. Step 2: Convert to fraction form
   2,289.42/3,159.46 = 1,404.70/x
3. Step 3: Cross multiply
   2,289.42x = 3,159.46 × 1,404.70
4. Step 4: Simplify right side
   2,289.42x = 4,438,093.46
5. Step 5: Solve for x
   x = 4,438,093.46/2,289.42
6. Step 6: Final answer
   x = 1,938.52