Finding the Fourth Proportional to 3,443.28, 5,164.12 and 977.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,443.28 : 5,164.12 = 977.43 : x
2. Step 2: Convert to fraction form
   3,443.28/5,164.12 = 977.43/x
3. Step 3: Cross multiply
   3,443.28x = 5,164.12 × 977.43
4. Step 4: Simplify right side
   3,443.28x = 5,047,565.81
5. Step 5: Solve for x
   x = 5,047,565.81/3,443.28
6. Step 6: Final answer
   x = 1,465.92