Finding the Fourth Proportional to 1,395.38, 1,925.63 and 774.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.38 : 1,925.63 = 774.38 : x
2. Step 2: Convert to fraction form
   1,395.38/1,925.63 = 774.38/x
3. Step 3: Cross multiply
   1,395.38x = 1,925.63 × 774.38
4. Step 4: Simplify right side
   1,395.38x = 1,491,155.86
5. Step 5: Solve for x
   x = 1,491,155.86/1,395.38
6. Step 6: Final answer
   x = 1,068.64