Finding the Fourth Proportional to 1,666.35, 2,498.81 and 570.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666.35 : 2,498.81 = 570.82 : x
2. Step 2: Convert to fraction form
   1,666.35/2,498.81 = 570.82/x
3. Step 3: Cross multiply
   1,666.35x = 2,498.81 × 570.82
4. Step 4: Simplify right side
   1,666.35x = 1,426,367.87
5. Step 5: Solve for x
   x = 1,426,367.87/1,666.35
6. Step 6: Final answer
   x = 855.99