Finding the Fourth Proportional to 1,158.02, 1,736.76 and 388.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.02 : 1,736.76 = 388.52 : x
2. Step 2: Convert to fraction form
   1,158.02/1,736.76 = 388.52/x
3. Step 3: Cross multiply
   1,158.02x = 1,736.76 × 388.52
4. Step 4: Simplify right side
   1,158.02x = 674,766.00
5. Step 5: Solve for x
   x = 674,766.00/1,158.02
6. Step 6: Final answer
   x = 582.69