Finding the Fourth Proportional to 1,328.24, 1,989.96 and 1,034.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,328.24 : 1,989.96 = 1,034.72 : x
2. Step 2: Convert to fraction form
   1,328.24/1,989.96 = 1,034.72/x
3. Step 3: Cross multiply
   1,328.24x = 1,989.96 × 1,034.72
4. Step 4: Simplify right side
   1,328.24x = 2,059,051.41
5. Step 5: Solve for x
   x = 2,059,051.41/1,328.24
6. Step 6: Final answer
   x = 1,550.21