Finding the Fourth Proportional to 1,984.56, 2,975.76 and 830.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,984.56 : 2,975.76 = 830.04 : x
2. Step 2: Convert to fraction form
   1,984.56/2,975.76 = 830.04/x
3. Step 3: Cross multiply
   1,984.56x = 2,975.76 × 830.04
4. Step 4: Simplify right side
   1,984.56x = 2,469,999.83
5. Step 5: Solve for x
   x = 2,469,999.83/1,984.56
6. Step 6: Final answer
   x = 1,244.61