Finding the Fourth Proportional to 1,357.46, 1,873.27 and 767.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.46 : 1,873.27 = 767.99 : x
2. Step 2: Convert to fraction form
   1,357.46/1,873.27 = 767.99/x
3. Step 3: Cross multiply
   1,357.46x = 1,873.27 × 767.99
4. Step 4: Simplify right side
   1,357.46x = 1,438,643.41
5. Step 5: Solve for x
   x = 1,438,643.41/1,357.46
6. Step 6: Final answer
   x = 1,059.80