Finding the Fourth Proportional to 1,150.60, 1,587.57 and 678.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.60 : 1,587.57 = 678.37 : x
2. Step 2: Convert to fraction form
   1,150.60/1,587.57 = 678.37/x
3. Step 3: Cross multiply
   1,150.60x = 1,587.57 × 678.37
4. Step 4: Simplify right side
   1,150.60x = 1,076,959.86
5. Step 5: Solve for x
   x = 1,076,959.86/1,150.60
6. Step 6: Final answer
   x = 936.00