Finding the Fourth Proportional to 1,101.72, 1,517.88 and 852.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.72 : 1,517.88 = 852.18 : x
2. Step 2: Convert to fraction form
   1,101.72/1,517.88 = 852.18/x
3. Step 3: Cross multiply
   1,101.72x = 1,517.88 × 852.18
4. Step 4: Simplify right side
   1,101.72x = 1,293,506.98
5. Step 5: Solve for x
   x = 1,293,506.98/1,101.72
6. Step 6: Final answer
   x = 1,174.08