Finding the Fourth Proportional to 1,730.16, 2,596.15 and 806.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,730.16 : 2,596.15 = 806.15 : x
2. Step 2: Convert to fraction form
   1,730.16/2,596.15 = 806.15/x
3. Step 3: Cross multiply
   1,730.16x = 2,596.15 × 806.15
4. Step 4: Simplify right side
   1,730.16x = 2,092,893.82
5. Step 5: Solve for x
   x = 2,092,893.82/1,730.16
6. Step 6: Final answer
   x = 1,209.65