Finding the Fourth Proportional to 2,637.31, 3,956.48 and 788.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,637.31 : 3,956.48 = 788.38 : x
2. Step 2: Convert to fraction form
   2,637.31/3,956.48 = 788.38/x
3. Step 3: Cross multiply
   2,637.31x = 3,956.48 × 788.38
4. Step 4: Simplify right side
   2,637.31x = 3,119,219.42
5. Step 5: Solve for x
   x = 3,119,219.42/2,637.31
6. Step 6: Final answer
   x = 1,182.73