Finding the Fourth Proportional to 2,269.89, 3,132 and 1,275.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.89 : 3,132 = 1,275.21 : x
2. Step 2: Convert to fraction form
   2,269.89/3,132 = 1,275.21/x
3. Step 3: Cross multiply
   2,269.89x = 3,132 × 1,275.21
4. Step 4: Simplify right side
   2,269.89x = 3,993,957.72
5. Step 5: Solve for x
   x = 3,993,957.72/2,269.89
6. Step 6: Final answer
   x = 1,759.54