Finding the Fourth Proportional to 2,770.78, 4,157.18 and 1,308.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,770.78 : 4,157.18 = 1,308.83 : x
2. Step 2: Convert to fraction form
   2,770.78/4,157.18 = 1,308.83/x
3. Step 3: Cross multiply
   2,770.78x = 4,157.18 × 1,308.83
4. Step 4: Simplify right side
   2,770.78x = 5,441,035.36
5. Step 5: Solve for x
   x = 5,441,035.36/2,770.78
6. Step 6: Final answer
   x = 1,963.72