Finding the Fourth Proportional to 2,356.49, 3,535.10 and 712.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,356.49 : 3,535.10 = 712.89 : x
2. Step 2: Convert to fraction form
   2,356.49/3,535.10 = 712.89/x
3. Step 3: Cross multiply
   2,356.49x = 3,535.10 × 712.89
4. Step 4: Simplify right side
   2,356.49x = 2,520,139.22
5. Step 5: Solve for x
   x = 2,520,139.22/2,356.49
6. Step 6: Final answer
   x = 1,069.45