Finding the Fourth Proportional to 1,485.78, 2,049.03 and 1,339.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.78 : 2,049.03 = 1,339.98 : x
2. Step 2: Convert to fraction form
   1,485.78/2,049.03 = 1,339.98/x
3. Step 3: Cross multiply
   1,485.78x = 2,049.03 × 1,339.98
4. Step 4: Simplify right side
   1,485.78x = 2,745,659.22
5. Step 5: Solve for x
   x = 2,745,659.22/1,485.78
6. Step 6: Final answer
   x = 1,847.96