Finding the Fourth Proportional to 1,017.61, 1,404.50 and 575.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.61 : 1,404.50 = 575.51 : x
2. Step 2: Convert to fraction form
   1,017.61/1,404.50 = 575.51/x
3. Step 3: Cross multiply
   1,017.61x = 1,404.50 × 575.51
4. Step 4: Simplify right side
   1,017.61x = 808,303.80
5. Step 5: Solve for x
   x = 808,303.80/1,017.61
6. Step 6: Final answer
   x = 794.32