Finding the Fourth Proportional to 1,535.49, 2,115.28 and 1,268.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,535.49 : 2,115.28 = 1,268.82 : x
2. Step 2: Convert to fraction form
   1,535.49/2,115.28 = 1,268.82/x
3. Step 3: Cross multiply
   1,535.49x = 2,115.28 × 1,268.82
4. Step 4: Simplify right side
   1,535.49x = 2,683,895.82
5. Step 5: Solve for x
   x = 2,683,895.82/1,535.49
6. Step 6: Final answer
   x = 1,747.91