Finding the Fourth Proportional to 2,623.49, 3,934.31 and 774.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,623.49 : 3,934.31 = 774.11 : x
2. Step 2: Convert to fraction form
   2,623.49/3,934.31 = 774.11/x
3. Step 3: Cross multiply
   2,623.49x = 3,934.31 × 774.11
4. Step 4: Simplify right side
   2,623.49x = 3,045,565.17
5. Step 5: Solve for x
   x = 3,045,565.17/2,623.49
6. Step 6: Final answer
   x = 1,160.89