Finding the Fourth Proportional to 1,150.58, 1,587.30 and 885.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.58 : 1,587.30 = 885.08 : x
2. Step 2: Convert to fraction form
   1,150.58/1,587.30 = 885.08/x
3. Step 3: Cross multiply
   1,150.58x = 1,587.30 × 885.08
4. Step 4: Simplify right side
   1,150.58x = 1,404,887.48
5. Step 5: Solve for x
   x = 1,404,887.48/1,150.58
6. Step 6: Final answer
   x = 1,221.03