Finding the Fourth Proportional to 2,637.77, 3,958.47 and 994.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,637.77 : 3,958.47 = 994.28 : x
2. Step 2: Convert to fraction form
   2,637.77/3,958.47 = 994.28/x
3. Step 3: Cross multiply
   2,637.77x = 3,958.47 × 994.28
4. Step 4: Simplify right side
   2,637.77x = 3,935,807.76
5. Step 5: Solve for x
   x = 3,935,807.76/2,637.77
6. Step 6: Final answer
   x = 1,492.10