Finding the Fourth Proportional to 1,308.69, 1,966.68 and 1,222.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.69 : 1,966.68 = 1,222.02 : x
2. Step 2: Convert to fraction form
   1,308.69/1,966.68 = 1,222.02/x
3. Step 3: Cross multiply
   1,308.69x = 1,966.68 × 1,222.02
4. Step 4: Simplify right side
   1,308.69x = 2,403,322.29
5. Step 5: Solve for x
   x = 2,403,322.29/1,308.69
6. Step 6: Final answer
   x = 1,836.43