Finding the Fourth Proportional to 2,049.72, 3,070.62 and 1,228.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,049.72 : 3,070.62 = 1,228.64 : x
2. Step 2: Convert to fraction form
   2,049.72/3,070.62 = 1,228.64/x
3. Step 3: Cross multiply
   2,049.72x = 3,070.62 × 1,228.64
4. Step 4: Simplify right side
   2,049.72x = 3,772,686.56
5. Step 5: Solve for x
   x = 3,772,686.56/2,049.72
6. Step 6: Final answer
   x = 1,840.59