Finding the Fourth Proportional to 1,158.07, 1,727.34 and 1,123.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.07 : 1,727.34 = 1,123.49 : x
2. Step 2: Convert to fraction form
   1,158.07/1,727.34 = 1,123.49/x
3. Step 3: Cross multiply
   1,158.07x = 1,727.34 × 1,123.49
4. Step 4: Simplify right side
   1,158.07x = 1,940,649.22
5. Step 5: Solve for x
   x = 1,940,649.22/1,158.07
6. Step 6: Final answer
   x = 1,675.76