Finding the Fourth Proportional to 1,905.55, 2,629.89 and 1,159.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,905.55 : 2,629.89 = 1,159.58 : x
2. Step 2: Convert to fraction form
   1,905.55/2,629.89 = 1,159.58/x
3. Step 3: Cross multiply
   1,905.55x = 2,629.89 × 1,159.58
4. Step 4: Simplify right side
   1,905.55x = 3,049,574.42
5. Step 5: Solve for x
   x = 3,049,574.42/1,905.55
6. Step 6: Final answer
   x = 1,600.37