Finding the Fourth Proportional to 2,404.86, 3,318.60 and 1,356.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,404.86 : 3,318.60 = 1,356.90 : x
2. Step 2: Convert to fraction form
   2,404.86/3,318.60 = 1,356.90/x
3. Step 3: Cross multiply
   2,404.86x = 3,318.60 × 1,356.90
4. Step 4: Simplify right side
   2,404.86x = 4,503,008.34
5. Step 5: Solve for x
   x = 4,503,008.34/2,404.86
6. Step 6: Final answer
   x = 1,872.46