Finding the Fourth Proportional to 2,355.57, 3,533.52 and 712.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,355.57 : 3,533.52 = 712.24 : x
2. Step 2: Convert to fraction form
   2,355.57/3,533.52 = 712.24/x
3. Step 3: Cross multiply
   2,355.57x = 3,533.52 × 712.24
4. Step 4: Simplify right side
   2,355.57x = 2,516,714.28
5. Step 5: Solve for x
   x = 2,516,714.28/2,355.57
6. Step 6: Final answer
   x = 1,068.41