Finding the Fourth Proportional to 1,752.28, 2,638.79 and 1,268.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,752.28 : 2,638.79 = 1,268.72 : x
2. Step 2: Convert to fraction form
   1,752.28/2,638.79 = 1,268.72/x
3. Step 3: Cross multiply
   1,752.28x = 2,638.79 × 1,268.72
4. Step 4: Simplify right side
   1,752.28x = 3,347,885.65
5. Step 5: Solve for x
   x = 3,347,885.65/1,752.28
6. Step 6: Final answer
   x = 1,910.59