Finding the Fourth Proportional to 2,442.56, 3,663.78 and 711.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,442.56 : 3,663.78 = 711.20 : x
2. Step 2: Convert to fraction form
   2,442.56/3,663.78 = 711.20/x
3. Step 3: Cross multiply
   2,442.56x = 3,663.78 × 711.20
4. Step 4: Simplify right side
   2,442.56x = 2,605,680.34
5. Step 5: Solve for x
   x = 2,605,680.34/2,442.56
6. Step 6: Final answer
   x = 1,066.78