Finding the Fourth Proportional to 1,049.32, 1,448.15 and 577.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.32 : 1,448.15 = 577.30 : x
2. Step 2: Convert to fraction form
   1,049.32/1,448.15 = 577.30/x
3. Step 3: Cross multiply
   1,049.32x = 1,448.15 × 577.30
4. Step 4: Simplify right side
   1,049.32x = 836,009.75
5. Step 5: Solve for x
   x = 836,009.75/1,049.32
6. Step 6: Final answer
   x = 796.72