Finding the Fourth Proportional to 1,990.30, 2,983.18 and 948.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.30 : 2,983.18 = 948.82 : x
2. Step 2: Convert to fraction form
   1,990.30/2,983.18 = 948.82/x
3. Step 3: Cross multiply
   1,990.30x = 2,983.18 × 948.82
4. Step 4: Simplify right side
   1,990.30x = 2,830,500.85
5. Step 5: Solve for x
   x = 2,830,500.85/1,990.30
6. Step 6: Final answer
   x = 1,422.15