Finding the Fourth Proportional to 2,241.69, 3,362.40 and 780.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,241.69 : 3,362.40 = 780.72 : x
2. Step 2: Convert to fraction form
   2,241.69/3,362.40 = 780.72/x
3. Step 3: Cross multiply
   2,241.69x = 3,362.40 × 780.72
4. Step 4: Simplify right side
   2,241.69x = 2,625,092.93
5. Step 5: Solve for x
   x = 2,625,092.93/2,241.69
6. Step 6: Final answer
   x = 1,171.03