Finding the Fourth Proportional to 1,099.39, 1,647.87 and 969.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099.39 : 1,647.87 = 969.52 : x
2. Step 2: Convert to fraction form
   1,099.39/1,647.87 = 969.52/x
3. Step 3: Cross multiply
   1,099.39x = 1,647.87 × 969.52
4. Step 4: Simplify right side
   1,099.39x = 1,597,642.92
5. Step 5: Solve for x
   x = 1,597,642.92/1,099.39
6. Step 6: Final answer
   x = 1,453.21