Finding the Fourth Proportional to 1,158.18, 1,726 and 1,123.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.18 : 1,726 = 1,123.03 : x
2. Step 2: Convert to fraction form
   1,158.18/1,726 = 1,123.03/x
3. Step 3: Cross multiply
   1,158.18x = 1,726 × 1,123.03
4. Step 4: Simplify right side
   1,158.18x = 1,938,349.78
5. Step 5: Solve for x
   x = 1,938,349.78/1,158.18
6. Step 6: Final answer
   x = 1,673.62