Finding the Fourth Proportional to 1,097.55, 1,645.27 and 366.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.55 : 1,645.27 = 366.72 : x
2. Step 2: Convert to fraction form
   1,097.55/1,645.27 = 366.72/x
3. Step 3: Cross multiply
   1,097.55x = 1,645.27 × 366.72
4. Step 4: Simplify right side
   1,097.55x = 603,352.50
5. Step 5: Solve for x
   x = 603,352.50/1,097.55
6. Step 6: Final answer
   x = 549.73