Finding the Fourth Proportional to 1,105.34, 1,524.72 and 690.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.34 : 1,524.72 = 690.62 : x
2. Step 2: Convert to fraction form
   1,105.34/1,524.72 = 690.62/x
3. Step 3: Cross multiply
   1,105.34x = 1,524.72 × 690.62
4. Step 4: Simplify right side
   1,105.34x = 1,052,994.50
5. Step 5: Solve for x
   x = 1,052,994.50/1,105.34
6. Step 6: Final answer
   x = 952.65