Finding the Fourth Proportional to 1,395.51, 1,925.88 and 766.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.51 : 1,925.88 = 766.02 : x
2. Step 2: Convert to fraction form
   1,395.51/1,925.88 = 766.02/x
3. Step 3: Cross multiply
   1,395.51x = 1,925.88 × 766.02
4. Step 4: Simplify right side
   1,395.51x = 1,475,262.60
5. Step 5: Solve for x
   x = 1,475,262.60/1,395.51
6. Step 6: Final answer
   x = 1,057.15