Finding the Fourth Proportional to 2,355.71, 3,533.31 and 712.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,355.71 : 3,533.31 = 712.49 : x
2. Step 2: Convert to fraction form
   2,355.71/3,533.31 = 712.49/x
3. Step 3: Cross multiply
   2,355.71x = 3,533.31 × 712.49
4. Step 4: Simplify right side
   2,355.71x = 2,517,430.38
5. Step 5: Solve for x
   x = 2,517,430.38/2,355.71
6. Step 6: Final answer
   x = 1,068.65