Finding the Fourth Proportional to 2,173.86, 3,260.12 and 712.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,173.86 : 3,260.12 = 712.69 : x
2. Step 2: Convert to fraction form
   2,173.86/3,260.12 = 712.69/x
3. Step 3: Cross multiply
   2,173.86x = 3,260.12 × 712.69
4. Step 4: Simplify right side
   2,173.86x = 2,323,443.21
5. Step 5: Solve for x
   x = 2,323,443.21/2,173.86
6. Step 6: Final answer
   x = 1,068.81