Finding the Fourth Proportional to 1,669.91, 2,503.37 and 573.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.91 : 2,503.37 = 573.50 : x
2. Step 2: Convert to fraction form
   1,669.91/2,503.37 = 573.50/x
3. Step 3: Cross multiply
   1,669.91x = 2,503.37 × 573.50
4. Step 4: Simplify right side
   1,669.91x = 1,435,690.39
5. Step 5: Solve for x
   x = 1,435,690.39/1,669.91
6. Step 6: Final answer
   x = 859.74