Finding the Fourth Proportional to 2,969.76, 4,453.38 and 1,213.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,969.76 : 4,453.38 = 1,213.55 : x
2. Step 2: Convert to fraction form
   2,969.76/4,453.38 = 1,213.55/x
3. Step 3: Cross multiply
   2,969.76x = 4,453.38 × 1,213.55
4. Step 4: Simplify right side
   2,969.76x = 5,404,393.73
5. Step 5: Solve for x
   x = 5,404,393.73/2,969.76
6. Step 6: Final answer
   x = 1,819.81