Finding the Fourth Proportional to 1,990.31, 2,984.78 and 951.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.31 : 2,984.78 = 951.48 : x
2. Step 2: Convert to fraction form
   1,990.31/2,984.78 = 951.48/x
3. Step 3: Cross multiply
   1,990.31x = 2,984.78 × 951.48
4. Step 4: Simplify right side
   1,990.31x = 2,839,953.72
5. Step 5: Solve for x
   x = 2,839,953.72/1,990.31
6. Step 6: Final answer
   x = 1,426.89