Finding the Fourth Proportional to 1,079.02, 1,618.76 and 338.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.02 : 1,618.76 = 338.62 : x
2. Step 2: Convert to fraction form
   1,079.02/1,618.76 = 338.62/x
3. Step 3: Cross multiply
   1,079.02x = 1,618.76 × 338.62
4. Step 4: Simplify right side
   1,079.02x = 548,144.51
5. Step 5: Solve for x
   x = 548,144.51/1,079.02
6. Step 6: Final answer
   x = 508.00