Finding the Fourth Proportional to 1,108.32, 1,518.41 and 1,066.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,108.32 : 1,518.41 = 1,066.80 : x
2. Step 2: Convert to fraction form
   1,108.32/1,518.41 = 1,066.80/x
3. Step 3: Cross multiply
   1,108.32x = 1,518.41 × 1,066.80
4. Step 4: Simplify right side
   1,108.32x = 1,619,834.45
5. Step 5: Solve for x
   x = 1,619,834.45/1,108.32
6. Step 6: Final answer
   x = 1,461.52