Finding the Fourth Proportional to 2,079.89, 3,117.65 and 830.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.89 : 3,117.65 = 830.00 : x
2. Step 2: Convert to fraction form
   2,079.89/3,117.65 = 830.00/x
3. Step 3: Cross multiply
   2,079.89x = 3,117.65 × 830.00
4. Step 4: Simplify right side
   2,079.89x = 2,587,635.99
5. Step 5: Solve for x
   x = 2,587,635.99/2,079.89
6. Step 6: Final answer
   x = 1,244.12