Finding the Fourth Proportional to 1,956, 2,699.52 and 1,128

Step by Step Solution

1. Step 1: Write the proportion equation
   1,956 : 2,699.52 = 1,128 : x
2. Step 2: Convert to fraction form
   1,956/2,699.52 = 1,128/x
3. Step 3: Cross multiply
   1,956x = 2,699.52 × 1,128
4. Step 4: Simplify right side
   1,956x = 3,045,058.56
5. Step 5: Solve for x
   x = 3,045,058.56/1,956
6. Step 6: Final answer
   x = 1,556.78