Finding the Fourth Proportional to 2,176.89, 3,004.71 and 1,380.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,176.89 : 3,004.71 = 1,380.34 : x
2. Step 2: Convert to fraction form
   2,176.89/3,004.71 = 1,380.34/x
3. Step 3: Cross multiply
   2,176.89x = 3,004.71 × 1,380.34
4. Step 4: Simplify right side
   2,176.89x = 4,147,521.40
5. Step 5: Solve for x
   x = 4,147,521.40/2,176.89
6. Step 6: Final answer
   x = 1,905.25