Finding the Fourth Proportional to 1,808.31, 2,495.25 and 1,022.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,808.31 : 2,495.25 = 1,022.21 : x
2. Step 2: Convert to fraction form
   1,808.31/2,495.25 = 1,022.21/x
3. Step 3: Cross multiply
   1,808.31x = 2,495.25 × 1,022.21
4. Step 4: Simplify right side
   1,808.31x = 2,550,657.03
5. Step 5: Solve for x
   x = 2,550,657.03/1,808.31
6. Step 6: Final answer
   x = 1,410.52