Finding the Fourth Proportional to 2,523.60, 3,786.28 and 1,224.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,523.60 : 3,786.28 = 1,224.72 : x
2. Step 2: Convert to fraction form
   2,523.60/3,786.28 = 1,224.72/x
3. Step 3: Cross multiply
   2,523.60x = 3,786.28 × 1,224.72
4. Step 4: Simplify right side
   2,523.60x = 4,637,132.84
5. Step 5: Solve for x
   x = 4,637,132.84/2,523.60
6. Step 6: Final answer
   x = 1,837.51