Finding the Fourth Proportional to 1,065.40, 1,470.51 and 711.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.40 : 1,470.51 = 711.34 : x
2. Step 2: Convert to fraction form
   1,065.40/1,470.51 = 711.34/x
3. Step 3: Cross multiply
   1,065.40x = 1,470.51 × 711.34
4. Step 4: Simplify right side
   1,065.40x = 1,046,032.58
5. Step 5: Solve for x
   x = 1,046,032.58/1,065.40
6. Step 6: Final answer
   x = 981.82