Finding the Fourth Proportional to 2,073.12, 2,855.76 and 1,679.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.12 : 2,855.76 = 1,679.04 : x
2. Step 2: Convert to fraction form
   2,073.12/2,855.76 = 1,679.04/x
3. Step 3: Cross multiply
   2,073.12x = 2,855.76 × 1,679.04
4. Step 4: Simplify right side
   2,073.12x = 4,794,935.27
5. Step 5: Solve for x
   x = 4,794,935.27/2,073.12
6. Step 6: Final answer
   x = 2,312.91