Finding the Fourth Proportional to 2,375.50, 3,278.10 and 1,380.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,375.50 : 3,278.10 = 1,380.42 : x
2. Step 2: Convert to fraction form
   2,375.50/3,278.10 = 1,380.42/x
3. Step 3: Cross multiply
   2,375.50x = 3,278.10 × 1,380.42
4. Step 4: Simplify right side
   2,375.50x = 4,525,154.80
5. Step 5: Solve for x
   x = 4,525,154.80/2,375.50
6. Step 6: Final answer
   x = 1,904.93