Finding the Fourth Proportional to 2,538.24, 3,809.52 and 1,240.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.24 : 3,809.52 = 1,240.08 : x
2. Step 2: Convert to fraction form
   2,538.24/3,809.52 = 1,240.08/x
3. Step 3: Cross multiply
   2,538.24x = 3,809.52 × 1,240.08
4. Step 4: Simplify right side
   2,538.24x = 4,724,109.56
5. Step 5: Solve for x
   x = 4,724,109.56/2,538.24
6. Step 6: Final answer
   x = 1,861.18