Finding the Fourth Proportional to 2,154.82, 3,230.85 and 1,181.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154.82 : 3,230.85 = 1,181.62 : x
2. Step 2: Convert to fraction form
   2,154.82/3,230.85 = 1,181.62/x
3. Step 3: Cross multiply
   2,154.82x = 3,230.85 × 1,181.62
4. Step 4: Simplify right side
   2,154.82x = 3,817,636.98
5. Step 5: Solve for x
   x = 3,817,636.98/2,154.82
6. Step 6: Final answer
   x = 1,771.67