Finding the Fourth Proportional to 2,478.95, 3,714.41 and 1,308.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.95 : 3,714.41 = 1,308.89 : x
2. Step 2: Convert to fraction form
   2,478.95/3,714.41 = 1,308.89/x
3. Step 3: Cross multiply
   2,478.95x = 3,714.41 × 1,308.89
4. Step 4: Simplify right side
   2,478.95x = 4,861,747.56
5. Step 5: Solve for x
   x = 4,861,747.56/2,478.95
6. Step 6: Final answer
   x = 1,961.21