Finding the Fourth Proportional to 2,039.15, 3,056.70 and 998.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.15 : 3,056.70 = 998.30 : x
2. Step 2: Convert to fraction form
   2,039.15/3,056.70 = 998.30/x
3. Step 3: Cross multiply
   2,039.15x = 3,056.70 × 998.30
4. Step 4: Simplify right side
   2,039.15x = 3,051,503.61
5. Step 5: Solve for x
   x = 3,051,503.61/2,039.15
6. Step 6: Final answer
   x = 1,496.46