Finding the Fourth Proportional to 2,173.76, 3,260.72 and 712.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,173.76 : 3,260.72 = 712.52 : x
2. Step 2: Convert to fraction form
   2,173.76/3,260.72 = 712.52/x
3. Step 3: Cross multiply
   2,173.76x = 3,260.72 × 712.52
4. Step 4: Simplify right side
   2,173.76x = 2,323,328.21
5. Step 5: Solve for x
   x = 2,323,328.21/2,173.76
6. Step 6: Final answer
   x = 1,068.81