Finding the Fourth Proportional to 2,356.78, 3,535.43 and 713.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,356.78 : 3,535.43 = 713.09 : x
2. Step 2: Convert to fraction form
   2,356.78/3,535.43 = 713.09/x
3. Step 3: Cross multiply
   2,356.78x = 3,535.43 × 713.09
4. Step 4: Simplify right side
   2,356.78x = 2,521,079.78
5. Step 5: Solve for x
   x = 2,521,079.78/2,356.78
6. Step 6: Final answer
   x = 1,069.71