Finding the Fourth Proportional to 1,150.37, 1,588.27 and 778.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.37 : 1,588.27 = 778.21 : x
2. Step 2: Convert to fraction form
   1,150.37/1,588.27 = 778.21/x
3. Step 3: Cross multiply
   1,150.37x = 1,588.27 × 778.21
4. Step 4: Simplify right side
   1,150.37x = 1,236,007.60
5. Step 5: Solve for x
   x = 1,236,007.60/1,150.37
6. Step 6: Final answer
   x = 1,074.44