Finding the Fourth Proportional to 1,065.43, 1,597.59 and 718.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.43 : 1,597.59 = 718.75 : x
2. Step 2: Convert to fraction form
   1,065.43/1,597.59 = 718.75/x
3. Step 3: Cross multiply
   1,065.43x = 1,597.59 × 718.75
4. Step 4: Simplify right side
   1,065.43x = 1,148,267.81
5. Step 5: Solve for x
   x = 1,148,267.81/1,065.43
6. Step 6: Final answer
   x = 1,077.75