Finding the Fourth Proportional to 1,087.56, 1,629.18 and 1,047.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.56 : 1,629.18 = 1,047.33 : x
2. Step 2: Convert to fraction form
   1,087.56/1,629.18 = 1,047.33/x
3. Step 3: Cross multiply
   1,087.56x = 1,629.18 × 1,047.33
4. Step 4: Simplify right side
   1,087.56x = 1,706,289.09
5. Step 5: Solve for x
   x = 1,706,289.09/1,087.56
6. Step 6: Final answer
   x = 1,568.91