Finding the Fourth Proportional to 2,214.72, 3,319.77 and 1,116.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,214.72 : 3,319.77 = 1,116.78 : x
2. Step 2: Convert to fraction form
   2,214.72/3,319.77 = 1,116.78/x
3. Step 3: Cross multiply
   2,214.72x = 3,319.77 × 1,116.78
4. Step 4: Simplify right side
   2,214.72x = 3,707,452.74
5. Step 5: Solve for x
   x = 3,707,452.74/2,214.72
6. Step 6: Final answer
   x = 1,674.01