Finding the Fourth Proportional to 1,150.10, 1,587.18 and 678.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.10 : 1,587.18 = 678.32 : x
2. Step 2: Convert to fraction form
   1,150.10/1,587.18 = 678.32/x
3. Step 3: Cross multiply
   1,150.10x = 1,587.18 × 678.32
4. Step 4: Simplify right side
   1,150.10x = 1,076,615.94
5. Step 5: Solve for x
   x = 1,076,615.94/1,150.10
6. Step 6: Final answer
   x = 936.11