Finding the Fourth Proportional to 2,971.10, 4,456.28 and 1,214.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,971.10 : 4,456.28 = 1,214.88 : x
2. Step 2: Convert to fraction form
   2,971.10/4,456.28 = 1,214.88/x
3. Step 3: Cross multiply
   2,971.10x = 4,456.28 × 1,214.88
4. Step 4: Simplify right side
   2,971.10x = 5,413,839.37
5. Step 5: Solve for x
   x = 5,413,839.37/2,971.10
6. Step 6: Final answer
   x = 1,822.17