Finding the Fourth Proportional to 2,947.40, 4,417.82 and 1,214.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,947.40 : 4,417.82 = 1,214.52 : x
2. Step 2: Convert to fraction form
   2,947.40/4,417.82 = 1,214.52/x
3. Step 3: Cross multiply
   2,947.40x = 4,417.82 × 1,214.52
4. Step 4: Simplify right side
   2,947.40x = 5,365,530.75
5. Step 5: Solve for x
   x = 5,365,530.75/2,947.40
6. Step 6: Final answer
   x = 1,820.43