Finding the Fourth Proportional to 1,996.57, 2,985 and 1,691.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,996.57 : 2,985 = 1,691.83 : x
2. Step 2: Convert to fraction form
   1,996.57/2,985 = 1,691.83/x
3. Step 3: Cross multiply
   1,996.57x = 2,985 × 1,691.83
4. Step 4: Simplify right side
   1,996.57x = 5,050,112.55
5. Step 5: Solve for x
   x = 5,050,112.55/1,996.57
6. Step 6: Final answer
   x = 2,529.39