Finding the Fourth Proportional to 1,691.22, 2,334.12 and 1,443.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,691.22 : 2,334.12 = 1,443.62 : x
2. Step 2: Convert to fraction form
   1,691.22/2,334.12 = 1,443.62/x
3. Step 3: Cross multiply
   1,691.22x = 2,334.12 × 1,443.62
4. Step 4: Simplify right side
   1,691.22x = 3,369,582.31
5. Step 5: Solve for x
   x = 3,369,582.31/1,691.22
6. Step 6: Final answer
   x = 1,992.40