Finding the Fourth Proportional to 1,447.76, 1,998.20 and 1,155.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.76 : 1,998.20 = 1,155.32 : x
2. Step 2: Convert to fraction form
   1,447.76/1,998.20 = 1,155.32/x
3. Step 3: Cross multiply
   1,447.76x = 1,998.20 × 1,155.32
4. Step 4: Simplify right side
   1,447.76x = 2,308,560.42
5. Step 5: Solve for x
   x = 2,308,560.42/1,447.76
6. Step 6: Final answer
   x = 1,594.57