Finding the Fourth Proportional to 2,623.39, 3,934.17 and 774.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,623.39 : 3,934.17 = 774.01 : x
2. Step 2: Convert to fraction form
   2,623.39/3,934.17 = 774.01/x
3. Step 3: Cross multiply
   2,623.39x = 3,934.17 × 774.01
4. Step 4: Simplify right side
   2,623.39x = 3,045,069.71
5. Step 5: Solve for x
   x = 3,045,069.71/2,623.39
6. Step 6: Final answer
   x = 1,160.74