Finding the Fourth Proportional to 2,269.63, 3,131.85 and 1,275.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,269.63 : 3,131.85 = 1,275.02 : x
2. Step 2: Convert to fraction form
   2,269.63/3,131.85 = 1,275.02/x
3. Step 3: Cross multiply
   2,269.63x = 3,131.85 × 1,275.02
4. Step 4: Simplify right side
   2,269.63x = 3,993,171.39
5. Step 5: Solve for x
   x = 3,993,171.39/2,269.63
6. Step 6: Final answer
   x = 1,759.39