Finding the Fourth Proportional to 2,017.59, 2,784.61 and 1,680.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.59 : 2,784.61 = 1,680.96 : x
2. Step 2: Convert to fraction form
   2,017.59/2,784.61 = 1,680.96/x
3. Step 3: Cross multiply
   2,017.59x = 2,784.61 × 1,680.96
4. Step 4: Simplify right side
   2,017.59x = 4,680,813.82
5. Step 5: Solve for x
   x = 4,680,813.82/2,017.59
6. Step 6: Final answer
   x = 2,320.00