Finding the Fourth Proportional to 1,105.98, 1,659.17 and 375.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.98 : 1,659.17 = 375.49 : x
2. Step 2: Convert to fraction form
   1,105.98/1,659.17 = 375.49/x
3. Step 3: Cross multiply
   1,105.98x = 1,659.17 × 375.49
4. Step 4: Simplify right side
   1,105.98x = 623,001.74
5. Step 5: Solve for x
   x = 623,001.74/1,105.98
6. Step 6: Final answer
   x = 563.30