Finding the Fourth Proportional to 1,642.38, 2,264.78 and 1,269.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,642.38 : 2,264.78 = 1,269.42 : x
2. Step 2: Convert to fraction form
   1,642.38/2,264.78 = 1,269.42/x
3. Step 3: Cross multiply
   1,642.38x = 2,264.78 × 1,269.42
4. Step 4: Simplify right side
   1,642.38x = 2,874,957.03
5. Step 5: Solve for x
   x = 2,874,957.03/1,642.38
6. Step 6: Final answer
   x = 1,750.48