Finding the Fourth Proportional to 3,188.98, 4,782.54 and 1,240.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,188.98 : 4,782.54 = 1,240.72 : x
2. Step 2: Convert to fraction form
   3,188.98/4,782.54 = 1,240.72/x
3. Step 3: Cross multiply
   3,188.98x = 4,782.54 × 1,240.72
4. Step 4: Simplify right side
   3,188.98x = 5,933,793.03
5. Step 5: Solve for x
   x = 5,933,793.03/3,188.98
6. Step 6: Final answer
   x = 1,860.72