Finding the Fourth Proportional to 1,641.56, 2,265.90 and 969.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.56 : 2,265.90 = 969.33 : x
2. Step 2: Convert to fraction form
   1,641.56/2,265.90 = 969.33/x
3. Step 3: Cross multiply
   1,641.56x = 2,265.90 × 969.33
4. Step 4: Simplify right side
   1,641.56x = 2,196,404.85
5. Step 5: Solve for x
   x = 2,196,404.85/1,641.56
6. Step 6: Final answer
   x = 1,338.00