Finding the Fourth Proportional to 2,375.72, 3,277.76 and 1,380.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,375.72 : 3,277.76 = 1,380.80 : x
2. Step 2: Convert to fraction form
   2,375.72/3,277.76 = 1,380.80/x
3. Step 3: Cross multiply
   2,375.72x = 3,277.76 × 1,380.80
4. Step 4: Simplify right side
   2,375.72x = 4,525,907.72
5. Step 5: Solve for x
   x = 4,525,907.72/2,375.72
6. Step 6: Final answer
   x = 1,905.07