Finding the Fourth Proportional to 1,065.96, 1,470.91 and 786.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.96 : 1,470.91 = 786.34 : x
2. Step 2: Convert to fraction form
   1,065.96/1,470.91 = 786.34/x
3. Step 3: Cross multiply
   1,065.96x = 1,470.91 × 786.34
4. Step 4: Simplify right side
   1,065.96x = 1,156,635.37
5. Step 5: Solve for x
   x = 1,156,635.37/1,065.96
6. Step 6: Final answer
   x = 1,085.07