Finding the Fourth Proportional to 2,612.45, 3,919.59 and 1,151.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.45 : 3,919.59 = 1,151.73 : x
2. Step 2: Convert to fraction form
   2,612.45/3,919.59 = 1,151.73/x
3. Step 3: Cross multiply
   2,612.45x = 3,919.59 × 1,151.73
4. Step 4: Simplify right side
   2,612.45x = 4,514,309.39
5. Step 5: Solve for x
   x = 4,514,309.39/2,612.45
6. Step 6: Final answer
   x = 1,728.00