Finding the Fourth Proportional to 1,469.43, 2,199.82 and 1,287.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,469.43 : 2,199.82 = 1,287.18 : x
2. Step 2: Convert to fraction form
   1,469.43/2,199.82 = 1,287.18/x
3. Step 3: Cross multiply
   1,469.43x = 2,199.82 × 1,287.18
4. Step 4: Simplify right side
   1,469.43x = 2,831,561.09
5. Step 5: Solve for x
   x = 2,831,561.09/1,469.43
6. Step 6: Final answer
   x = 1,926.98