Finding the Fourth Proportional to 2,059.71, 3,088.98 and 810.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.71 : 3,088.98 = 810.09 : x
2. Step 2: Convert to fraction form
   2,059.71/3,088.98 = 810.09/x
3. Step 3: Cross multiply
   2,059.71x = 3,088.98 × 810.09
4. Step 4: Simplify right side
   2,059.71x = 2,502,351.81
5. Step 5: Solve for x
   x = 2,502,351.81/2,059.71
6. Step 6: Final answer
   x = 1,214.90