Finding the Fourth Proportional to 1,123.44, 1,547.28 and 926.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.44 : 1,547.28 = 926.88 : x
2. Step 2: Convert to fraction form
   1,123.44/1,547.28 = 926.88/x
3. Step 3: Cross multiply
   1,123.44x = 1,547.28 × 926.88
4. Step 4: Simplify right side
   1,123.44x = 1,434,142.89
5. Step 5: Solve for x
   x = 1,434,142.89/1,123.44
6. Step 6: Final answer
   x = 1,276.56