Finding the Fourth Proportional to 933.42, 1,399.37 and 386.00

Step by Step Solution

1. Step 1: Write the proportion equation
   933.42 : 1,399.37 = 386.00 : x
2. Step 2: Convert to fraction form
   933.42/1,399.37 = 386.00/x
3. Step 3: Cross multiply
   933.42x = 1,399.37 × 386.00
4. Step 4: Simplify right side
   933.42x = 540,147.89
5. Step 5: Solve for x
   x = 540,147.89/933.42
6. Step 6: Final answer
   x = 578.68