Finding the Fourth Proportional to 2,308.28, 3,463.63 and 1,385.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.28 : 3,463.63 = 1,385.69 : x
2. Step 2: Convert to fraction form
   2,308.28/3,463.63 = 1,385.69/x
3. Step 3: Cross multiply
   2,308.28x = 3,463.63 × 1,385.69
4. Step 4: Simplify right side
   2,308.28x = 4,799,517.45
5. Step 5: Solve for x
   x = 4,799,517.45/2,308.28
6. Step 6: Final answer
   x = 2,079.26