Finding the Fourth Proportional to 1,066.22, 1,598.55 and 718.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.22 : 1,598.55 = 718.69 : x
2. Step 2: Convert to fraction form
   1,066.22/1,598.55 = 718.69/x
3. Step 3: Cross multiply
   1,066.22x = 1,598.55 × 718.69
4. Step 4: Simplify right side
   1,066.22x = 1,148,861.90
5. Step 5: Solve for x
   x = 1,148,861.90/1,066.22
6. Step 6: Final answer
   x = 1,077.51