Finding the Fourth Proportional to 1,066.16, 1,597.48 and 649.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.16 : 1,597.48 = 649.78 : x
2. Step 2: Convert to fraction form
   1,066.16/1,597.48 = 649.78/x
3. Step 3: Cross multiply
   1,066.16x = 1,597.48 × 649.78
4. Step 4: Simplify right side
   1,066.16x = 1,038,004.94
5. Step 5: Solve for x
   x = 1,038,004.94/1,066.16
6. Step 6: Final answer
   x = 973.59