Finding the Fourth Proportional to 1,097.52, 1,645.76 and 404.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.52 : 1,645.76 = 404.06 : x
2. Step 2: Convert to fraction form
   1,097.52/1,645.76 = 404.06/x
3. Step 3: Cross multiply
   1,097.52x = 1,645.76 × 404.06
4. Step 4: Simplify right side
   1,097.52x = 664,985.79
5. Step 5: Solve for x
   x = 664,985.79/1,097.52
6. Step 6: Final answer
   x = 605.90