Finding the Fourth Proportional to 1,123.36, 1,681.59 and 1,027.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.36 : 1,681.59 = 1,027.69 : x
2. Step 2: Convert to fraction form
   1,123.36/1,681.59 = 1,027.69/x
3. Step 3: Cross multiply
   1,123.36x = 1,681.59 × 1,027.69
4. Step 4: Simplify right side
   1,123.36x = 1,728,153.23
5. Step 5: Solve for x
   x = 1,728,153.23/1,123.36
6. Step 6: Final answer
   x = 1,538.38