Finding the Fourth Proportional to 1,055.36, 1,456.72 and 740.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.36 : 1,456.72 = 740.48 : x
2. Step 2: Convert to fraction form
   1,055.36/1,456.72 = 740.48/x
3. Step 3: Cross multiply
   1,055.36x = 1,456.72 × 740.48
4. Step 4: Simplify right side
   1,055.36x = 1,078,672.03
5. Step 5: Solve for x
   x = 1,078,672.03/1,055.36
6. Step 6: Final answer
   x = 1,022.09