Finding the Fourth Proportional to 1,158.28, 1,736.98 and 378.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.28 : 1,736.98 = 378.10 : x
2. Step 2: Convert to fraction form
   1,158.28/1,736.98 = 378.10/x
3. Step 3: Cross multiply
   1,158.28x = 1,736.98 × 378.10
4. Step 4: Simplify right side
   1,158.28x = 656,743.45
5. Step 5: Solve for x
   x = 656,743.45/1,158.28
6. Step 6: Final answer
   x = 567.00