Finding the Fourth Proportional to 2,221.98, 3,333.30 and 1,181.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221.98 : 3,333.30 = 1,181.72 : x
2. Step 2: Convert to fraction form
   2,221.98/3,333.30 = 1,181.72/x
3. Step 3: Cross multiply
   2,221.98x = 3,333.30 × 1,181.72
4. Step 4: Simplify right side
   2,221.98x = 3,939,010.61
5. Step 5: Solve for x
   x = 3,939,010.61/2,221.98
6. Step 6: Final answer
   x = 1,772.75