Finding the Fourth Proportional to 1,002.96, 1,504.18 and 386.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.96 : 1,504.18 = 386.33 : x
2. Step 2: Convert to fraction form
   1,002.96/1,504.18 = 386.33/x
3. Step 3: Cross multiply
   1,002.96x = 1,504.18 × 386.33
4. Step 4: Simplify right side
   1,002.96x = 581,101.37
5. Step 5: Solve for x
   x = 581,101.37/1,002.96
6. Step 6: Final answer
   x = 579.38