Finding the Fourth Proportional to 1,477.28, 2,040.72 and 1,065.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,477.28 : 2,040.72 = 1,065.44 : x
2. Step 2: Convert to fraction form
   1,477.28/2,040.72 = 1,065.44/x
3. Step 3: Cross multiply
   1,477.28x = 2,040.72 × 1,065.44
4. Step 4: Simplify right side
   1,477.28x = 2,174,264.72
5. Step 5: Solve for x
   x = 2,174,264.72/1,477.28
6. Step 6: Final answer
   x = 1,471.80