Finding the Fourth Proportional to 2,545.89, 3,819.20 and 1,159.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.89 : 3,819.20 = 1,159.58 : x
2. Step 2: Convert to fraction form
   2,545.89/3,819.20 = 1,159.58/x
3. Step 3: Cross multiply
   2,545.89x = 3,819.20 × 1,159.58
4. Step 4: Simplify right side
   2,545.89x = 4,428,643.04
5. Step 5: Solve for x
   x = 4,428,643.04/2,545.89
6. Step 6: Final answer
   x = 1,739.53