Finding the Fourth Proportional to 2,988.33, 4,482.72 and 908.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,988.33 : 4,482.72 = 908.21 : x
2. Step 2: Convert to fraction form
   2,988.33/4,482.72 = 908.21/x
3. Step 3: Cross multiply
   2,988.33x = 4,482.72 × 908.21
4. Step 4: Simplify right side
   2,988.33x = 4,071,228.72
5. Step 5: Solve for x
   x = 4,071,228.72/2,988.33
6. Step 6: Final answer
   x = 1,362.38