Finding the Fourth Proportional to 2,140.00, 3,209.99 and 1,709.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140.00 : 3,209.99 = 1,709.89 : x
2. Step 2: Convert to fraction form
   2,140.00/3,209.99 = 1,709.89/x
3. Step 3: Cross multiply
   2,140.00x = 3,209.99 × 1,709.89
4. Step 4: Simplify right side
   2,140.00x = 5,488,705.20
5. Step 5: Solve for x
   x = 5,488,705.20/2,140.00
6. Step 6: Final answer
   x = 2,564.82