Finding the Fourth Proportional to 1,186.58, 1,771.34 and 1,104.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,186.58 : 1,771.34 = 1,104.57 : x
2. Step 2: Convert to fraction form
   1,186.58/1,771.34 = 1,104.57/x
3. Step 3: Cross multiply
   1,186.58x = 1,771.34 × 1,104.57
4. Step 4: Simplify right side
   1,186.58x = 1,956,563.50
5. Step 5: Solve for x
   x = 1,956,563.50/1,186.58
6. Step 6: Final answer
   x = 1,648.91