Finding the Fourth Proportional to 2,079.58, 3,117.20 and 983.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.58 : 3,117.20 = 983.12 : x
2. Step 2: Convert to fraction form
   2,079.58/3,117.20 = 983.12/x
3. Step 3: Cross multiply
   2,079.58x = 3,117.20 × 983.12
4. Step 4: Simplify right side
   2,079.58x = 3,064,581.66
5. Step 5: Solve for x
   x = 3,064,581.66/2,079.58
6. Step 6: Final answer
   x = 1,473.65