Finding the Fourth Proportional to 2,968.47, 4,454.43 and 1,213.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,968.47 : 4,454.43 = 1,213.20 : x
2. Step 2: Convert to fraction form
   2,968.47/4,454.43 = 1,213.20/x
3. Step 3: Cross multiply
   2,968.47x = 4,454.43 × 1,213.20
4. Step 4: Simplify right side
   2,968.47x = 5,404,114.48
5. Step 5: Solve for x
   x = 5,404,114.48/2,968.47
6. Step 6: Final answer
   x = 1,820.50