Finding the Fourth Proportional to 1,296, 1,953.72 and 1,276.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296 : 1,953.72 = 1,276.56 : x
2. Step 2: Convert to fraction form
   1,296/1,953.72 = 1,276.56/x
3. Step 3: Cross multiply
   1,296x = 1,953.72 × 1,276.56
4. Step 4: Simplify right side
   1,296x = 2,494,040.80
5. Step 5: Solve for x
   x = 2,494,040.80/1,296
6. Step 6: Final answer
   x = 1,924.41