Finding the Fourth Proportional to 1,150.21, 1,588.05 and 884.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.21 : 1,588.05 = 884.18 : x
2. Step 2: Convert to fraction form
   1,150.21/1,588.05 = 884.18/x
3. Step 3: Cross multiply
   1,150.21x = 1,588.05 × 884.18
4. Step 4: Simplify right side
   1,150.21x = 1,404,122.05
5. Step 5: Solve for x
   x = 1,404,122.05/1,150.21
6. Step 6: Final answer
   x = 1,220.75