Finding the Fourth Proportional to 2,031.90, 3,046.83 and 991.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.90 : 3,046.83 = 991.98 : x
2. Step 2: Convert to fraction form
   2,031.90/3,046.83 = 991.98/x
3. Step 3: Cross multiply
   2,031.90x = 3,046.83 × 991.98
4. Step 4: Simplify right side
   2,031.90x = 3,022,394.42
5. Step 5: Solve for x
   x = 3,022,394.42/2,031.90
6. Step 6: Final answer
   x = 1,487.47