Finding the Fourth Proportional to 2,475.89, 3,416.62 and 1,356.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,475.89 : 3,416.62 = 1,356.80 : x
2. Step 2: Convert to fraction form
   2,475.89/3,416.62 = 1,356.80/x
3. Step 3: Cross multiply
   2,475.89x = 3,416.62 × 1,356.80
4. Step 4: Simplify right side
   2,475.89x = 4,635,649.54
5. Step 5: Solve for x
   x = 4,635,649.54/2,475.89
6. Step 6: Final answer
   x = 1,872.31