Finding the Fourth Proportional to 1,109.80, 1,663.82 and 562.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.80 : 1,663.82 = 562.20 : x
2. Step 2: Convert to fraction form
   1,109.80/1,663.82 = 562.20/x
3. Step 3: Cross multiply
   1,109.80x = 1,663.82 × 562.20
4. Step 4: Simplify right side
   1,109.80x = 935,399.60
5. Step 5: Solve for x
   x = 935,399.60/1,109.80
6. Step 6: Final answer
   x = 842.85