Finding the Fourth Proportional to 2,637.72, 3,957.34 and 788.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,637.72 : 3,957.34 = 788.88 : x
2. Step 2: Convert to fraction form
   2,637.72/3,957.34 = 788.88/x
3. Step 3: Cross multiply
   2,637.72x = 3,957.34 × 788.88
4. Step 4: Simplify right side
   2,637.72x = 3,121,866.38
5. Step 5: Solve for x
   x = 3,121,866.38/2,637.72
6. Step 6: Final answer
   x = 1,183.55