Finding the Fourth Proportional to 2,454.18, 3,679.31 and 994.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,454.18 : 3,679.31 = 994.02 : x
2. Step 2: Convert to fraction form
   2,454.18/3,679.31 = 994.02/x
3. Step 3: Cross multiply
   2,454.18x = 3,679.31 × 994.02
4. Step 4: Simplify right side
   2,454.18x = 3,657,307.73
5. Step 5: Solve for x
   x = 3,657,307.73/2,454.18
6. Step 6: Final answer
   x = 1,490.24