Finding the Fourth Proportional to 2,951.60, 4,428.03 and 977.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,951.60 : 4,428.03 = 977.31 : x
2. Step 2: Convert to fraction form
   2,951.60/4,428.03 = 977.31/x
3. Step 3: Cross multiply
   2,951.60x = 4,428.03 × 977.31
4. Step 4: Simplify right side
   2,951.60x = 4,327,558.00
5. Step 5: Solve for x
   x = 4,327,558.00/2,951.60
6. Step 6: Final answer
   x = 1,466.18