Finding the Fourth Proportional to 1,404.65, 1,938.58 and 1,054.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.65 : 1,938.58 = 1,054.73 : x
2. Step 2: Convert to fraction form
   1,404.65/1,938.58 = 1,054.73/x
3. Step 3: Cross multiply
   1,404.65x = 1,938.58 × 1,054.73
4. Step 4: Simplify right side
   1,404.65x = 2,044,680.69
5. Step 5: Solve for x
   x = 2,044,680.69/1,404.65
6. Step 6: Final answer
   x = 1,455.65