Finding the Fourth Proportional to 2,043.78, 2,820.38 and 1,159.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,043.78 : 2,820.38 = 1,159.59 : x
2. Step 2: Convert to fraction form
   2,043.78/2,820.38 = 1,159.59/x
3. Step 3: Cross multiply
   2,043.78x = 2,820.38 × 1,159.59
4. Step 4: Simplify right side
   2,043.78x = 3,270,478.65
5. Step 5: Solve for x
   x = 3,270,478.65/2,043.78
6. Step 6: Final answer
   x = 1,600.21