Finding the Fourth Proportional to 2,475.78, 3,416.52 and 1,356.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,475.78 : 3,416.52 = 1,356.71 : x
2. Step 2: Convert to fraction form
   2,475.78/3,416.52 = 1,356.71/x
3. Step 3: Cross multiply
   2,475.78x = 3,416.52 × 1,356.71
4. Step 4: Simplify right side
   2,475.78x = 4,635,240.48
5. Step 5: Solve for x
   x = 4,635,240.48/2,475.78
6. Step 6: Final answer
   x = 1,872.24