Finding the Fourth Proportional to 1,407.94, 1,942.96 and 786.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.94 : 1,942.96 = 786.94 : x
2. Step 2: Convert to fraction form
   1,407.94/1,942.96 = 786.94/x
3. Step 3: Cross multiply
   1,407.94x = 1,942.96 × 786.94
4. Step 4: Simplify right side
   1,407.94x = 1,528,992.94
5. Step 5: Solve for x
   x = 1,528,992.94/1,407.94
6. Step 6: Final answer
   x = 1,085.98