Finding the Fourth Proportional to 1,050.83, 1,575.48 and 495.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.83 : 1,575.48 = 495.57 : x
2. Step 2: Convert to fraction form
   1,050.83/1,575.48 = 495.57/x
3. Step 3: Cross multiply
   1,050.83x = 1,575.48 × 495.57
4. Step 4: Simplify right side
   1,050.83x = 780,760.62
5. Step 5: Solve for x
   x = 780,760.62/1,050.83
6. Step 6: Final answer
   x = 742.99