Finding the Fourth Proportional to 1,357.57, 1,873.56 and 768.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.57 : 1,873.56 = 768.22 : x
2. Step 2: Convert to fraction form
   1,357.57/1,873.56 = 768.22/x
3. Step 3: Cross multiply
   1,357.57x = 1,873.56 × 768.22
4. Step 4: Simplify right side
   1,357.57x = 1,439,294.01
5. Step 5: Solve for x
   x = 1,439,294.01/1,357.57
6. Step 6: Final answer
   x = 1,060.20