Finding the Fourth Proportional to 1,905.59, 2,629.91 and 1,159.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,905.59 : 2,629.91 = 1,159.61 : x
2. Step 2: Convert to fraction form
   1,905.59/2,629.91 = 1,159.61/x
3. Step 3: Cross multiply
   1,905.59x = 2,629.91 × 1,159.61
4. Step 4: Simplify right side
   1,905.59x = 3,049,659.68
5. Step 5: Solve for x
   x = 3,049,659.68/1,905.59
6. Step 6: Final answer
   x = 1,600.37