Finding the Fourth Proportional to 2,241.54, 3,362.72 and 780.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,241.54 : 3,362.72 = 780.57 : x
2. Step 2: Convert to fraction form
   2,241.54/3,362.72 = 780.57/x
3. Step 3: Cross multiply
   2,241.54x = 3,362.72 × 780.57
4. Step 4: Simplify right side
   2,241.54x = 2,624,834.45
5. Step 5: Solve for x
   x = 2,624,834.45/2,241.54
6. Step 6: Final answer
   x = 1,171.00