Finding the Fourth Proportional to 1,498.12, 2,067.67 and 869.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,498.12 : 2,067.67 = 869.05 : x
2. Step 2: Convert to fraction form
   1,498.12/2,067.67 = 869.05/x
3. Step 3: Cross multiply
   1,498.12x = 2,067.67 × 869.05
4. Step 4: Simplify right side
   1,498.12x = 1,796,898.28
5. Step 5: Solve for x
   x = 1,796,898.28/1,498.12
6. Step 6: Final answer
   x = 1,199.44