Finding the Fourth Proportional to 934.71, 1,401.94 and 386.82

Step by Step Solution

1. Step 1: Write the proportion equation
   934.71 : 1,401.94 = 386.82 : x
2. Step 2: Convert to fraction form
   934.71/1,401.94 = 386.82/x
3. Step 3: Cross multiply
   934.71x = 1,401.94 × 386.82
4. Step 4: Simplify right side
   934.71x = 542,298.43
5. Step 5: Solve for x
   x = 542,298.43/934.71
6. Step 6: Final answer
   x = 580.18