Finding the Fourth Proportional to 1,148.97, 1,564.37 and 1,145.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,148.97 : 1,564.37 = 1,145.33 : x
2. Step 2: Convert to fraction form
   1,148.97/1,564.37 = 1,145.33/x
3. Step 3: Cross multiply
   1,148.97x = 1,564.37 × 1,145.33
4. Step 4: Simplify right side
   1,148.97x = 1,791,719.89
5. Step 5: Solve for x
   x = 1,791,719.89/1,148.97
6. Step 6: Final answer
   x = 1,559.41