Finding the Fourth Proportional to 1,066.80, 1,597.47 and 654.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.80 : 1,597.47 = 654.69 : x
2. Step 2: Convert to fraction form
   1,066.80/1,597.47 = 654.69/x
3. Step 3: Cross multiply
   1,066.80x = 1,597.47 × 654.69
4. Step 4: Simplify right side
   1,066.80x = 1,045,847.63
5. Step 5: Solve for x
   x = 1,045,847.63/1,066.80
6. Step 6: Final answer
   x = 980.36