Finding the Fourth Proportional to 1,407.34, 1,941.96 and 786.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.34 : 1,941.96 = 786.34 : x
2. Step 2: Convert to fraction form
   1,407.34/1,941.96 = 786.34/x
3. Step 3: Cross multiply
   1,407.34x = 1,941.96 × 786.34
4. Step 4: Simplify right side
   1,407.34x = 1,527,040.83
5. Step 5: Solve for x
   x = 1,527,040.83/1,407.34
6. Step 6: Final answer
   x = 1,085.05