Finding the Fourth Proportional to 3,079.78, 4,617.82 and 1,298.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,079.78 : 4,617.82 = 1,298.72 : x
2. Step 2: Convert to fraction form
   3,079.78/4,617.82 = 1,298.72/x
3. Step 3: Cross multiply
   3,079.78x = 4,617.82 × 1,298.72
4. Step 4: Simplify right side
   3,079.78x = 5,997,238.73
5. Step 5: Solve for x
   x = 5,997,238.73/3,079.78
6. Step 6: Final answer
   x = 1,947.29