Finding the Fourth Proportional to 1,432.66, 1,978.18 and 1,100.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.66 : 1,978.18 = 1,100.56 : x
2. Step 2: Convert to fraction form
   1,432.66/1,978.18 = 1,100.56/x
3. Step 3: Cross multiply
   1,432.66x = 1,978.18 × 1,100.56
4. Step 4: Simplify right side
   1,432.66x = 2,177,105.78
5. Step 5: Solve for x
   x = 2,177,105.78/1,432.66
6. Step 6: Final answer
   x = 1,519.62