Finding the Fourth Proportional to 3,146.94, 4,719.78 and 2,990.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,146.94 : 4,719.78 = 2,990.82 : x
2. Step 2: Convert to fraction form
   3,146.94/4,719.78 = 2,990.82/x
3. Step 3: Cross multiply
   3,146.94x = 4,719.78 × 2,990.82
4. Step 4: Simplify right side
   3,146.94x = 14,116,012.42
5. Step 5: Solve for x
   x = 14,116,012.42/3,146.94
6. Step 6: Final answer
   x = 4,485.63