Finding the Fourth Proportional to 2,269.76, 3,132.34 and 1,275.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.76 : 3,132.34 = 1,275.21 : x
2. Step 2: Convert to fraction form
   2,269.76/3,132.34 = 1,275.21/x
3. Step 3: Cross multiply
   2,269.76x = 3,132.34 × 1,275.21
4. Step 4: Simplify right side
   2,269.76x = 3,994,388.10
5. Step 5: Solve for x
   x = 3,994,388.10/2,269.76
6. Step 6: Final answer
   x = 1,759.83