Finding the Fourth Proportional to 2,940.88, 4,407.46 and 1,208.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,940.88 : 4,407.46 = 1,208.56 : x
2. Step 2: Convert to fraction form
   2,940.88/4,407.46 = 1,208.56/x
3. Step 3: Cross multiply
   2,940.88x = 4,407.46 × 1,208.56
4. Step 4: Simplify right side
   2,940.88x = 5,326,679.86
5. Step 5: Solve for x
   x = 5,326,679.86/2,940.88
6. Step 6: Final answer
   x = 1,811.25