Finding the Fourth Proportional to 1,153.39, 1,588.41 and 1,049.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,153.39 : 1,588.41 = 1,049.61 : x
2. Step 2: Convert to fraction form
   1,153.39/1,588.41 = 1,049.61/x
3. Step 3: Cross multiply
   1,153.39x = 1,588.41 × 1,049.61
4. Step 4: Simplify right side
   1,153.39x = 1,667,208.04
5. Step 5: Solve for x
   x = 1,667,208.04/1,153.39
6. Step 6: Final answer
   x = 1,445.49