Finding the Fourth Proportional to 2,699.49, 4,049.52 and 1,239.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,699.49 : 4,049.52 = 1,239.06 : x
2. Step 2: Convert to fraction form
   2,699.49/4,049.52 = 1,239.06/x
3. Step 3: Cross multiply
   2,699.49x = 4,049.52 × 1,239.06
4. Step 4: Simplify right side
   2,699.49x = 5,017,598.25
5. Step 5: Solve for x
   x = 5,017,598.25/2,699.49
6. Step 6: Final answer
   x = 1,858.72