Finding the Fourth Proportional to 2,072.05, 3,108.88 and 773.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.05 : 3,108.88 = 773.62 : x
2. Step 2: Convert to fraction form
   2,072.05/3,108.88 = 773.62/x
3. Step 3: Cross multiply
   2,072.05x = 3,108.88 × 773.62
4. Step 4: Simplify right side
   2,072.05x = 2,405,084.94
5. Step 5: Solve for x
   x = 2,405,084.94/2,072.05
6. Step 6: Final answer
   x = 1,160.73