Finding the Fourth Proportional to 2,799.59, 3,862.32 and 1,680.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,799.59 : 3,862.32 = 1,680.59 : x
2. Step 2: Convert to fraction form
   2,799.59/3,862.32 = 1,680.59/x
3. Step 3: Cross multiply
   2,799.59x = 3,862.32 × 1,680.59
4. Step 4: Simplify right side
   2,799.59x = 6,490,976.37
5. Step 5: Solve for x
   x = 6,490,976.37/2,799.59
6. Step 6: Final answer
   x = 2,318.55