Finding the Fourth Proportional to 1,039.83, 1,548.42 and 1,028.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.83 : 1,548.42 = 1,028.32 : x
2. Step 2: Convert to fraction form
   1,039.83/1,548.42 = 1,028.32/x
3. Step 3: Cross multiply
   1,039.83x = 1,548.42 × 1,028.32
4. Step 4: Simplify right side
   1,039.83x = 1,592,268.37
5. Step 5: Solve for x
   x = 1,592,268.37/1,039.83
6. Step 6: Final answer
   x = 1,531.28