Finding the Fourth Proportional to 2,473.57, 3,708.78 and 1,240.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,473.57 : 3,708.78 = 1,240.30 : x
2. Step 2: Convert to fraction form
   2,473.57/3,708.78 = 1,240.30/x
3. Step 3: Cross multiply
   2,473.57x = 3,708.78 × 1,240.30
4. Step 4: Simplify right side
   2,473.57x = 4,599,999.83
5. Step 5: Solve for x
   x = 4,599,999.83/2,473.57
6. Step 6: Final answer
   x = 1,859.66