Finding the Fourth Proportional to 1,339.02, 2,018.55 and 1,249.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.02 : 2,018.55 = 1,249.82 : x
2. Step 2: Convert to fraction form
   1,339.02/2,018.55 = 1,249.82/x
3. Step 3: Cross multiply
   1,339.02x = 2,018.55 × 1,249.82
4. Step 4: Simplify right side
   1,339.02x = 2,522,814.07
5. Step 5: Solve for x
   x = 2,522,814.07/1,339.02
6. Step 6: Final answer
   x = 1,884.07