Finding the Fourth Proportional to 1,065.55, 1,470.06 and 786.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.55 : 1,470.06 = 786.46 : x
2. Step 2: Convert to fraction form
   1,065.55/1,470.06 = 786.46/x
3. Step 3: Cross multiply
   1,065.55x = 1,470.06 × 786.46
4. Step 4: Simplify right side
   1,065.55x = 1,156,143.39
5. Step 5: Solve for x
   x = 1,156,143.39/1,065.55
6. Step 6: Final answer
   x = 1,085.02