Finding the Fourth Proportional to 1,105.12, 1,657.70 and 364.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.12 : 1,657.70 = 364.72 : x
2. Step 2: Convert to fraction form
   1,105.12/1,657.70 = 364.72/x
3. Step 3: Cross multiply
   1,105.12x = 1,657.70 × 364.72
4. Step 4: Simplify right side
   1,105.12x = 604,596.34
5. Step 5: Solve for x
   x = 604,596.34/1,105.12
6. Step 6: Final answer
   x = 547.09