Finding the Fourth Proportional to 1,175.51, 1,759.82 and 1,098.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,175.51 : 1,759.82 = 1,098.56 : x
2. Step 2: Convert to fraction form
   1,175.51/1,759.82 = 1,098.56/x
3. Step 3: Cross multiply
   1,175.51x = 1,759.82 × 1,098.56
4. Step 4: Simplify right side
   1,175.51x = 1,933,267.86
5. Step 5: Solve for x
   x = 1,933,267.86/1,175.51
6. Step 6: Final answer
   x = 1,644.62