Finding the Fourth Proportional to 1,101.15, 1,653.78 and 969.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.15 : 1,653.78 = 969.42 : x
2. Step 2: Convert to fraction form
   1,101.15/1,653.78 = 969.42/x
3. Step 3: Cross multiply
   1,101.15x = 1,653.78 × 969.42
4. Step 4: Simplify right side
   1,101.15x = 1,603,200.49
5. Step 5: Solve for x
   x = 1,603,200.49/1,101.15
6. Step 6: Final answer
   x = 1,455.94