Finding the Fourth Proportional to 1,100.42, 1,651.15 and 689.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.42 : 1,651.15 = 689.33 : x
2. Step 2: Convert to fraction form
   1,100.42/1,651.15 = 689.33/x
3. Step 3: Cross multiply
   1,100.42x = 1,651.15 × 689.33
4. Step 4: Simplify right side
   1,100.42x = 1,138,187.23
5. Step 5: Solve for x
   x = 1,138,187.23/1,100.42
6. Step 6: Final answer
   x = 1,034.32