Finding the Fourth Proportional to 1,757.40, 2,424.89 and 1,128.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,757.40 : 2,424.89 = 1,128.48 : x
2. Step 2: Convert to fraction form
   1,757.40/2,424.89 = 1,128.48/x
3. Step 3: Cross multiply
   1,757.40x = 2,424.89 × 1,128.48
4. Step 4: Simplify right side
   1,757.40x = 2,736,440.89
5. Step 5: Solve for x
   x = 2,736,440.89/1,757.40
6. Step 6: Final answer
   x = 1,557.10