Finding the Fourth Proportional to 2,221.63, 3,329.71 and 1,181.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.63 : 3,329.71 = 1,181.59 : x
2. Step 2: Convert to fraction form
   2,221.63/3,329.71 = 1,181.59/x
3. Step 3: Cross multiply
   2,221.63x = 3,329.71 × 1,181.59
4. Step 4: Simplify right side
   2,221.63x = 3,934,340.76
5. Step 5: Solve for x
   x = 3,934,340.76/2,221.63
6. Step 6: Final answer
   x = 1,770.93