Finding the Fourth Proportional to 2,138.64, 3,204.72 and 983.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138.64 : 3,204.72 = 983.04 : x
2. Step 2: Convert to fraction form
   2,138.64/3,204.72 = 983.04/x
3. Step 3: Cross multiply
   2,138.64x = 3,204.72 × 983.04
4. Step 4: Simplify right side
   2,138.64x = 3,150,367.95
5. Step 5: Solve for x
   x = 3,150,367.95/2,138.64
6. Step 6: Final answer
   x = 1,473.07