Finding the Fourth Proportional to 1,050.69, 1,450.10 and 788.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.69 : 1,450.10 = 788.25 : x
2. Step 2: Convert to fraction form
   1,050.69/1,450.10 = 788.25/x
3. Step 3: Cross multiply
   1,050.69x = 1,450.10 × 788.25
4. Step 4: Simplify right side
   1,050.69x = 1,143,041.33
5. Step 5: Solve for x
   x = 1,143,041.33/1,050.69
6. Step 6: Final answer
   x = 1,087.90