Finding the Fourth Proportional to 2,270.84, 3,406.72 and 710.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,270.84 : 3,406.72 = 710.78 : x
2. Step 2: Convert to fraction form
   2,270.84/3,406.72 = 710.78/x
3. Step 3: Cross multiply
   2,270.84x = 3,406.72 × 710.78
4. Step 4: Simplify right side
   2,270.84x = 2,421,428.44
5. Step 5: Solve for x
   x = 2,421,428.44/2,270.84
6. Step 6: Final answer
   x = 1,066.31