Finding the Fourth Proportional to 2,008.31, 2,770.54 and 1,222.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,008.31 : 2,770.54 = 1,222.81 : x
2. Step 2: Convert to fraction form
   2,008.31/2,770.54 = 1,222.81/x
3. Step 3: Cross multiply
   2,008.31x = 2,770.54 × 1,222.81
4. Step 4: Simplify right side
   2,008.31x = 3,387,834.03
5. Step 5: Solve for x
   x = 3,387,834.03/2,008.31
6. Step 6: Final answer
   x = 1,686.91