Finding the Fourth Proportional to 2,637.98, 3,955.17 and 994.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,637.98 : 3,955.17 = 994.22 : x
2. Step 2: Convert to fraction form
   2,637.98/3,955.17 = 994.22/x
3. Step 3: Cross multiply
   2,637.98x = 3,955.17 × 994.22
4. Step 4: Simplify right side
   2,637.98x = 3,932,309.12
5. Step 5: Solve for x
   x = 3,932,309.12/2,637.98
6. Step 6: Final answer
   x = 1,490.65