Finding the Fourth Proportional to 1,395.50, 1,925.79 and 774.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.50 : 1,925.79 = 774.62 : x
2. Step 2: Convert to fraction form
   1,395.50/1,925.79 = 774.62/x
3. Step 3: Cross multiply
   1,395.50x = 1,925.79 × 774.62
4. Step 4: Simplify right side
   1,395.50x = 1,491,755.45
5. Step 5: Solve for x
   x = 1,491,755.45/1,395.50
6. Step 6: Final answer
   x = 1,068.98