Finding the Fourth Proportional to 2,173.52, 3,260.62 and 786.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,173.52 : 3,260.62 = 786.71 : x
2. Step 2: Convert to fraction form
   2,173.52/3,260.62 = 786.71/x
3. Step 3: Cross multiply
   2,173.52x = 3,260.62 × 786.71
4. Step 4: Simplify right side
   2,173.52x = 2,565,171.50
5. Step 5: Solve for x
   x = 2,565,171.50/2,173.52
6. Step 6: Final answer
   x = 1,180.19