Finding the Fourth Proportional to 1,100.50, 1,649.89 and 579.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.50 : 1,649.89 = 579.82 : x
2. Step 2: Convert to fraction form
   1,100.50/1,649.89 = 579.82/x
3. Step 3: Cross multiply
   1,100.50x = 1,649.89 × 579.82
4. Step 4: Simplify right side
   1,100.50x = 956,639.22
5. Step 5: Solve for x
   x = 956,639.22/1,100.50
6. Step 6: Final answer
   x = 869.28