Finding the Fourth Proportional to 1,395.44, 1,925.72 and 766.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.44 : 1,925.72 = 766.02 : x
2. Step 2: Convert to fraction form
   1,395.44/1,925.72 = 766.02/x
3. Step 3: Cross multiply
   1,395.44x = 1,925.72 × 766.02
4. Step 4: Simplify right side
   1,395.44x = 1,475,146.30
5. Step 5: Solve for x
   x = 1,475,146.30/1,395.44
6. Step 6: Final answer
   x = 1,057.12