Finding the Fourth Proportional to 2,173.16, 3,259.34 and 712.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,173.16 : 3,259.34 = 712.12 : x
2. Step 2: Convert to fraction form
   2,173.16/3,259.34 = 712.12/x
3. Step 3: Cross multiply
   2,173.16x = 3,259.34 × 712.12
4. Step 4: Simplify right side
   2,173.16x = 2,321,041.20
5. Step 5: Solve for x
   x = 2,321,041.20/2,173.16
6. Step 6: Final answer
   x = 1,068.05