Finding the Fourth Proportional to 1,357.75, 1,873.71 and 768.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.75 : 1,873.71 = 768.25 : x
2. Step 2: Convert to fraction form
   1,357.75/1,873.71 = 768.25/x
3. Step 3: Cross multiply
   1,357.75x = 1,873.71 × 768.25
4. Step 4: Simplify right side
   1,357.75x = 1,439,477.71
5. Step 5: Solve for x
   x = 1,439,477.71/1,357.75
6. Step 6: Final answer
   x = 1,060.19