Finding the Fourth Proportional to 1,108.82, 1,662.62 and 378.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,108.82 : 1,662.62 = 378.10 : x
2. Step 2: Convert to fraction form
   1,108.82/1,662.62 = 378.10/x
3. Step 3: Cross multiply
   1,108.82x = 1,662.62 × 378.10
4. Step 4: Simplify right side
   1,108.82x = 628,636.62
5. Step 5: Solve for x
   x = 628,636.62/1,108.82
6. Step 6: Final answer
   x = 566.94