Finding the Fourth Proportional to 2,212.38, 3,320.62 and 1,117.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,212.38 : 3,320.62 = 1,117.52 : x
2. Step 2: Convert to fraction form
   2,212.38/3,320.62 = 1,117.52/x
3. Step 3: Cross multiply
   2,212.38x = 3,320.62 × 1,117.52
4. Step 4: Simplify right side
   2,212.38x = 3,710,842.66
5. Step 5: Solve for x
   x = 3,710,842.66/2,212.38
6. Step 6: Final answer
   x = 1,677.31