Finding the Fourth Proportional to 1,089.08, 1,632.56 and 697.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089.08 : 1,632.56 = 697.98 : x
2. Step 2: Convert to fraction form
   1,089.08/1,632.56 = 697.98/x
3. Step 3: Cross multiply
   1,089.08x = 1,632.56 × 697.98
4. Step 4: Simplify right side
   1,089.08x = 1,139,494.23
5. Step 5: Solve for x
   x = 1,139,494.23/1,089.08
6. Step 6: Final answer
   x = 1,046.30