Finding the Fourth Proportional to 1,055.32, 1,455.34 and 719.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.32 : 1,455.34 = 719.96 : x
2. Step 2: Convert to fraction form
   1,055.32/1,455.34 = 719.96/x
3. Step 3: Cross multiply
   1,055.32x = 1,455.34 × 719.96
4. Step 4: Simplify right side
   1,055.32x = 1,047,786.59
5. Step 5: Solve for x
   x = 1,047,786.59/1,055.32
6. Step 6: Final answer
   x = 992.86