Finding the Fourth Proportional to 2,628.89, 3,947.80 and 1,757.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.89 : 3,947.80 = 1,757.00 : x
2. Step 2: Convert to fraction form
   2,628.89/3,947.80 = 1,757.00/x
3. Step 3: Cross multiply
   2,628.89x = 3,947.80 × 1,757.00
4. Step 4: Simplify right side
   2,628.89x = 6,936,264.86
5. Step 5: Solve for x
   x = 6,936,264.86/2,628.89
6. Step 6: Final answer
   x = 2,638.48