Finding the Fourth Proportional to 2,241.22, 3,361.89 and 780.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,241.22 : 3,361.89 = 780.43 : x
2. Step 2: Convert to fraction form
   2,241.22/3,361.89 = 780.43/x
3. Step 3: Cross multiply
   2,241.22x = 3,361.89 × 780.43
4. Step 4: Simplify right side
   2,241.22x = 2,623,719.81
5. Step 5: Solve for x
   x = 2,623,719.81/2,241.22
6. Step 6: Final answer
   x = 1,170.67