Finding the Fourth Proportional to 2,238.54, 3,359.34 and 777.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.54 : 3,359.34 = 777.69 : x
2. Step 2: Convert to fraction form
   2,238.54/3,359.34 = 777.69/x
3. Step 3: Cross multiply
   2,238.54x = 3,359.34 × 777.69
4. Step 4: Simplify right side
   2,238.54x = 2,612,525.12
5. Step 5: Solve for x
   x = 2,612,525.12/2,238.54
6. Step 6: Final answer
   x = 1,167.07