Finding the Fourth Proportional to 1,973.82, 2,960.72 and 819.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,973.82 : 2,960.72 = 819.57 : x
2. Step 2: Convert to fraction form
   1,973.82/2,960.72 = 819.57/x
3. Step 3: Cross multiply
   1,973.82x = 2,960.72 × 819.57
4. Step 4: Simplify right side
   1,973.82x = 2,426,513.19
5. Step 5: Solve for x
   x = 2,426,513.19/1,973.82
6. Step 6: Final answer
   x = 1,229.35