Finding the Fourth Proportional to 2,212.82, 3,321.27 and 1,117.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,212.82 : 3,321.27 = 1,117.95 : x
2. Step 2: Convert to fraction form
   2,212.82/3,321.27 = 1,117.95/x
3. Step 3: Cross multiply
   2,212.82x = 3,321.27 × 1,117.95
4. Step 4: Simplify right side
   2,212.82x = 3,713,008.29
5. Step 5: Solve for x
   x = 3,713,008.29/2,212.82
6. Step 6: Final answer
   x = 1,677.96