Finding the Fourth Proportional to 2,145.12, 2,963.88 and 1,706.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.12 : 2,963.88 = 1,706.28 : x
2. Step 2: Convert to fraction form
   2,145.12/2,963.88 = 1,706.28/x
3. Step 3: Cross multiply
   2,145.12x = 2,963.88 × 1,706.28
4. Step 4: Simplify right side
   2,145.12x = 5,057,209.17
5. Step 5: Solve for x
   x = 5,057,209.17/2,145.12
6. Step 6: Final answer
   x = 2,357.54