Finding the Fourth Proportional to 2,444.56, 3,666.78 and 713.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,444.56 : 3,666.78 = 713.20 : x
2. Step 2: Convert to fraction form
   2,444.56/3,666.78 = 713.20/x
3. Step 3: Cross multiply
   2,444.56x = 3,666.78 × 713.20
4. Step 4: Simplify right side
   2,444.56x = 2,615,147.50
5. Step 5: Solve for x
   x = 2,615,147.50/2,444.56
6. Step 6: Final answer
   x = 1,069.78