Finding the Fourth Proportional to 1,017.50, 1,403.88 and 575.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.50 : 1,403.88 = 575.34 : x
2. Step 2: Convert to fraction form
   1,017.50/1,403.88 = 575.34/x
3. Step 3: Cross multiply
   1,017.50x = 1,403.88 × 575.34
4. Step 4: Simplify right side
   1,017.50x = 807,708.32
5. Step 5: Solve for x
   x = 807,708.32/1,017.50
6. Step 6: Final answer
   x = 793.82