Finding the Fourth Proportional to 2,098.11, 3,147.15 and 999.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,098.11 : 3,147.15 = 999.15 : x
2. Step 2: Convert to fraction form
   2,098.11/3,147.15 = 999.15/x
3. Step 3: Cross multiply
   2,098.11x = 3,147.15 × 999.15
4. Step 4: Simplify right side
   2,098.11x = 3,144,474.92
5. Step 5: Solve for x
   x = 3,144,474.92/2,098.11
6. Step 6: Final answer
   x = 1,498.72