Finding the Fourth Proportional to 1,669.61, 2,504.71 and 573.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.61 : 2,504.71 = 573.73 : x
2. Step 2: Convert to fraction form
   1,669.61/2,504.71 = 573.73/x
3. Step 3: Cross multiply
   1,669.61x = 2,504.71 × 573.73
4. Step 4: Simplify right side
   1,669.61x = 1,437,019.57
5. Step 5: Solve for x
   x = 1,437,019.57/1,669.61
6. Step 6: Final answer
   x = 860.69