Finding the Fourth Proportional to 1,118.48, 1,676.59 and 561.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.48 : 1,676.59 = 561.48 : x
2. Step 2: Convert to fraction form
   1,118.48/1,676.59 = 561.48/x
3. Step 3: Cross multiply
   1,118.48x = 1,676.59 × 561.48
4. Step 4: Simplify right side
   1,118.48x = 941,373.49
5. Step 5: Solve for x
   x = 941,373.49/1,118.48
6. Step 6: Final answer
   x = 841.66