Finding the Fourth Proportional to 1,404.62, 1,938.47 and 845.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.62 : 1,938.47 = 845.09 : x
2. Step 2: Convert to fraction form
   1,404.62/1,938.47 = 845.09/x
3. Step 3: Cross multiply
   1,404.62x = 1,938.47 × 845.09
4. Step 4: Simplify right side
   1,404.62x = 1,638,167.69
5. Step 5: Solve for x
   x = 1,638,167.69/1,404.62
6. Step 6: Final answer
   x = 1,166.28