Finding the Fourth Proportional to 2,424.89, 3,637.56 and 781.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,424.89 : 3,637.56 = 781.05 : x
2. Step 2: Convert to fraction form
   2,424.89/3,637.56 = 781.05/x
3. Step 3: Cross multiply
   2,424.89x = 3,637.56 × 781.05
4. Step 4: Simplify right side
   2,424.89x = 2,841,116.24
5. Step 5: Solve for x
   x = 2,841,116.24/2,424.89
6. Step 6: Final answer
   x = 1,171.65