Finding the Fourth Proportional to 3,443.07, 5,164.60 and 977.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,443.07 : 5,164.60 = 977.91 : x
2. Step 2: Convert to fraction form
   3,443.07/5,164.60 = 977.91/x
3. Step 3: Cross multiply
   3,443.07x = 5,164.60 × 977.91
4. Step 4: Simplify right side
   3,443.07x = 5,050,513.99
5. Step 5: Solve for x
   x = 5,050,513.99/3,443.07
6. Step 6: Final answer
   x = 1,466.86