Finding the Fourth Proportional to 2,168.28, 3,252.34 and 707.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.28 : 3,252.34 = 707.40 : x
2. Step 2: Convert to fraction form
   2,168.28/3,252.34 = 707.40/x
3. Step 3: Cross multiply
   2,168.28x = 3,252.34 × 707.40
4. Step 4: Simplify right side
   2,168.28x = 2,300,705.32
5. Step 5: Solve for x
   x = 2,300,705.32/2,168.28
6. Step 6: Final answer
   x = 1,061.07