Finding the Fourth Proportional to 1,357.46, 1,873.15 and 767.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.46 : 1,873.15 = 767.96 : x
2. Step 2: Convert to fraction form
   1,357.46/1,873.15 = 767.96/x
3. Step 3: Cross multiply
   1,357.46x = 1,873.15 × 767.96
4. Step 4: Simplify right side
   1,357.46x = 1,438,496.90
5. Step 5: Solve for x
   x = 1,438,496.90/1,357.46
6. Step 6: Final answer
   x = 1,059.70