Finding the Fourth Proportional to 2,355.49, 3,533.71 and 712.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,355.49 : 3,533.71 = 712.18 : x
2. Step 2: Convert to fraction form
   2,355.49/3,533.71 = 712.18/x
3. Step 3: Cross multiply
   2,355.49x = 3,533.71 × 712.18
4. Step 4: Simplify right side
   2,355.49x = 2,516,637.59
5. Step 5: Solve for x
   x = 2,516,637.59/2,355.49
6. Step 6: Final answer
   x = 1,068.41