Finding the Fourth Proportional to 2,456.90, 3,390.56 and 1,337.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.90 : 3,390.56 = 1,337.88 : x
2. Step 2: Convert to fraction form
   2,456.90/3,390.56 = 1,337.88/x
3. Step 3: Cross multiply
   2,456.90x = 3,390.56 × 1,337.88
4. Step 4: Simplify right side
   2,456.90x = 4,536,165.76
5. Step 5: Solve for x
   x = 4,536,165.76/2,456.90
6. Step 6: Final answer
   x = 1,846.29